Scrolling between sections just stop working

//set the default target sections URLs
‘ps2id_mousewheel_default_sections’ => array(
‘#section1’,
),
//Special options for the mouse-wheel smooth scrolling (these overwrite the ones in plugin settings)
//Scroll type/easing
‘ps2id_mousewheel_scroll_easing’ => “easeOutQuint”,
//Scroll duration (in milliseconds)
‘ps2id_mousewheel_scroll_duration’ => 800,
//Keep the current element highlighted until the next one comes into view (this is needed if the page has non-adjacent sections, i.e. when not all sections are next to one another)
‘ps2id_mousewheel_keep_highlight_until_next’ => true,
//Allow only one highlighted element at a time (should be disabled when $ps2id_mousewheel_keep_highlight_until_next is set to true)
‘ps2id_mousewheel_force_single_highlight’ => false,
//Append the clicked link’s hash value (e.g. #id) to browser’s URL/address bar (this should normally be disabled for better UX)
‘ps2id_mousewheel_append_hash’ => false
);
$r = (isset($opt) && !empty($opt)) ? $opts[$opt] : $opts;
return $r;
}

function ps2id_mw_condition($pages_arr){
//set the condition for the mousewheel functionality
//add the WordPress conditional tags you want (https://codex.wordpress.org/Conditional_Tags)
return is_single( $pages_arr ) || is_page( $pages_arr )
//|| is_category() //example: uncomment to enable for categories (with the default target sections URLs set in ps2id_mousewheel_default_sections option)
//|| is_home() //example: uncomment to enable for homepage (with the default target sections URLs set in ps2id_mousewheel_default_sections option)
;
}

//—– HTML —–

add_action(‘wp_footer’, ‘ps2id_mw_html’);

function ps2id_mw_html(){
?>
<?php if(class_exists(‘malihuPageScroll2id’)) : ?>
<?php
$pages_arr = ps2id_mw_get_pages();
$page_id = get_queried_object_id();
$sections_arr = is_singular() && in_array($page_id, $pages_arr) ? ps2id_mousewheel_options(‘ps2id_mousewheel_pages’)[$page_id] : ps2id_mousewheel_options(‘ps2id_mousewheel_default_sections’);
?>
<?php if(ps2id_mw_condition($pages_arr)) : ?>
<?php if(!is_null($sections_arr)) : ?>
<div id=”ps2id-mw-sections-bullets”>
<?php
foreach($sections_arr as $section){
?>
” class=”ps2id-mw-section-bullet”>
<?php
}
?>
</div>
<?php endif; ?>
<style>

/* aside bullets section */
@media (min-width: 799px) {
#ps2id-mw-sections-bullets{
position: fixed;
right: 2em;
height: auto;
top: 50%;
transform: translateY(-50%);
z-index: 2;
}
}

/* aside bullets */
@media (min-width: 799px) {
.ps2id-mw-section-bullet{
display: block;
position: relative;
width: 1.5em;
height: 1.5em;
border-radius: 100%;
margin: 0 auto;
opacity: .6;
}
}

@media (min-width: 799px) {
.ps2id-mw-section-bullet::before{
content: “”;
display: block;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
margin: .4em;
border-radius: 100%;
border: 6px solid;
color: #c2c2d6
}
}

@media (min-width: 799px) {
.ps2id-mw-section-bullet:hover,
.ps2id-mw-section-bullet.mPS2id-highlight:not(.mPS2id-highlight-first):not(.mPS2id-highlight-last),
.ps2id-mw-section-bullet.mPS2id-highlight-first{
opacity: 1;
}
}

</style>
<?php endif; ?>
<?php endif; ?>
<?php
};

//—– Javascript —–

add_action( ‘wp_enqueue_scripts’, ‘ps2id_special_params’, 1 );

function ps2id_special_params(){
if(class_exists(‘malihuPageScroll2id’)){
$pages_arr = ps2id_mw_get_pages();
if(ps2id_mw_condition($pages_arr)) :
wp_register_script( ‘page-scroll-to-id-mw-js-init’, ”, array(), ‘0.0.1’, false );
wp_enqueue_script( ‘page-scroll-to-id-mw-js-init’ );
wp_add_inline_script( ‘page-scroll-to-id-mw-js-init’, ‘window.ps2id_special_params={
highlightSelector: “.ps2id-mw-section-bullet”, //mouse-wheel script highlight selector
scrollEasing: “‘.ps2id_mousewheel_options(‘ps2id_mousewheel_scroll_easing’).'”, //set a more fitting scroll easing for mousewheel smooth scrolling
scrollSpeed: ‘.ps2id_mousewheel_options(‘ps2id_mousewheel_scroll_duration’).’, //set a more fitting scrolling duration for mousewheel smooth scrolling
keepHighlightUntilNext: “‘.json_encode(ps2id_mousewheel_options(‘ps2id_mousewheel_keep_highlight_until_next’)).'”, //this is needed if the page has non-adjacent sections (i.e. when not all sections are next to one another)
forceSingleHighlight: “‘.json_encode(ps2id_mousewheel_options(‘ps2id_mousewheel_force_single_highlight’)).'”, //should be disabled when keepHighlightUntilNext is enabled
appendHash: “‘.json_encode(ps2id_mousewheel_options(‘ps2id_mousewheel_append_hash’)).'” //should normally be disabled for better UX
};’);
endif;
}
}

add_action( ‘wp_enqueue_scripts’, ‘ps2id_mw_js’, 99 );

function ps2id_mw_js(){
if(class_exists(‘malihuPageScroll2id’)){
$pages_arr = ps2id_mw_get_pages();
if(ps2id_mw_condition($pages_arr)) :
if(PS2ID_MINIFIED_JS){
$deps = array(‘jquery’,’page-scroll-to-id-mw-js-init’,’page-scroll-to-id-plugin-script’);
}else{
$deps = array(‘jquery’,’page-scroll-to-id-mw-js-init’,’page-scroll-to-id-plugin-init-script’,’page-scroll-to-id-plugin-script’);
}
wp_register_script( ‘page-scroll-to-id-mw-js’, ”, $deps, ‘0.0.1’, true );
wp_enqueue_script( ‘page-scroll-to-id-mw-js’ );
wp_add_inline_script( ‘page-scroll-to-id-mw-js’, ‘(function($){
$(window).on(“load”,function(){

var doc=$(document),
mPS2idData=doc.data(“mPS2id”),
mPS2idExt;

if(!mPS2idData){
console.log(“Error: \’Page scroll to id\’ plugin not present or activated. Please run the code after plugin is loaded.”);
return;
}

if(!$(“._mPS2id-t”).length) return;

doc.data(“mPS2idExtend”,{
selector: “._mPS2id-h”,
currentSelector: function(){
return this.index($(“.mPS2id-highlight-first”).length ? $(“.mPS2id-highlight-first”) : $(“.mPS2id-highlight”).length ? $(“.mPS2id-highlight”) : $(“.mPS2id-wheel-init”));
},
target: function(){
var curr=$(“.mPS2id-target-first”).length ? $(“.mPS2id-target-first”) : $(“.mPS2id-target”).length ? $(“.mPS2id-target”) : $(“.mPS2id-clicked”).length ? $(“#”+$(“.mPS2id-clicked”).attr(“href”).split(“#”)[1]) : false;
if(!curr.length){
//if no current target exists, get the next and previous closest sections
var max=999999999,
min=-999999999;
$(“._mPS2id-t”).each(function(){
var pos=mPS2idData.layout===”horizontal” ? this.getBoundingClientRect().left : this.getBoundingClientRect().top;
if(pos < 0 && pos > min){
min=pos;
curr=$(“._mPS2id-t[data-psid-wheel-section=\'”+($(this).data(“psid-wheel-section”)+1)+”\’]”);
}else if(pos > 0 && pos < max){
max=pos;
curr=$(“._mPS2id-t[data-psid-wheel-section=\'”+($(this).data(“psid-wheel-section”)-1)+”\’]”);
}
});
$(“._mPS2id-h[data-psid-wheel-link=\'”+curr.data(“psid-wheel-section”)+”\’]”).addClass(“mPS2id-wheel-init”);
}
return [
$(“._mPS2id-t[data-psid-wheel-section=\'”+(curr.data(“psid-wheel-section”)-1)+”\’]”), //previous target
curr, //current target
$(“._mPS2id-t[data-psid-wheel-section=\'”+(curr.data(“psid-wheel-section”)+1)+”\’]”), //next target
];
},
needScroll: function(dir){
if($(“html,body”).is(“:animated”)) return;
if(dir > 0){ //scrolled fw
var el=mPS2idExt.target.call()[2][0]; //next adjacent target
if(mPS2idData.layout===”horizontal”){
return el ? el.getBoundingClientRect().left > (window.innerWidth || document.documentElement.clientWidth) : true; //next target is after viewport
}else{
return el ? el.getBoundingClientRect().top > (window.innerHeight || document.documentElement.clientHeight) : true; //next target is below viewport
}
}else if(dir < 0){ //scrolled bw
var el=mPS2idExt.target.call()[0][0]; //previous adjacent target
if(mPS2idData.layout===”horizontal”){
return el ? el.getBoundingClientRect().right < 0 : true; //previous target is before viewport
}else{
return el ? el.getBoundingClientRect().bottom < 0 : true; //previous target is above viewport
}
}
},
input:{
y: null,
x: null
},
i: null,
time: null,
debounce:{
prevTime: 0
},
support:{
wheel: false
}
}).on(“ps2id-scrollSection”,function(e,dlt,i){
var sel=$(mPS2idExt.selector);
if(!$(“html,body”).is(“:animated”)){
if(!i) i=mPS2idExt.currentSelector.call(sel);
if(!(i===0 && dlt>0) && !(i===sel.length-1 && dlt<0)) sel.eq(i-dlt).trigger(“click.mPS2id”);
}
}).on(“keydown”,function(e){ //keyboard
var code=e.keyCode ? e.keyCode : e.which,
keys=$(this).data(“mPS2id”).layout===”horizontal” ? [37,39] : [38,40];
if(code===keys[0] || code===keys[1]){
if(!mPS2idExt.needScroll((code > 38 ? 1 : -1))){ //check if normal scrolling is needed to reach adjacent targets
if($(mPS2idExt.selector).length) e.preventDefault();
$(this).trigger(“ps2id-scrollSection”,(code===keys[0] ? 1 : -1));
}
}
})
//touch events (remove the following code if you don\’t want to apply the touch functionality)
.on(“pointerdown touchstart”,function(e){ //touch (optional)
var o=e.originalEvent;
if(o.pointerType===”touch” || e.type===”touchstart”){
var y=o.screenY || o.changedTouches[0].screenY;
mPS2idExt.input.y=y;
if($(this).data(“mPS2id”).layout===”horizontal”){
var x=o.screenX || o.changedTouches[0].screenX;
mPS2idExt.input.x=x;
}
mPS2idExt.time=o.timeStamp;
mPS2idExt.i=mPS2idExt.currentSelector.call($(mPS2idExt.selector));
}
}).on(“pointerup touchend”,function(e){
var o=e.originalEvent;
if(o.pointerType===”touch” || e.type===”touchend”){
var y=o.screenY || o.changedTouches[0].screenY,
diff=mPS2idExt.input.y-y,
time=o.timeStamp-mPS2idExt.time,
i=mPS2idExt.currentSelector.call($(mPS2idExt.selector));
if($(this).data(“mPS2id”).layout===”horizontal”){
var x=o.screenX || o.changedTouches[0].screenX,
diff=mPS2idExt.input.x-x;
}
if(Math.abs(diff)<2) return;
var _switch=function(){
return time<200 && i===mPS2idExt.i;
};
var dir=diff > 0 ? 1 : -1;
if(time < 500 && Math.abs(diff) > 50) $(this).trigger(“ps2id-scrollSection”,[(diff>0 && _switch() ? -1 : diff<0 && _switch() ? 1 : 0),(_switch() ? mPS2idExt.i : i)]);
}
})
// —–
.on(“ps2id-wheel-init”,function(){
//script initialization
mPS2idExt=$(this).data(“mPS2idExtend”);
$(“._mPS2id-t”).each(function(index){
$(this).attr(“data-psid-wheel-section”,index);
});
$(“._mPS2id-h”).each(function(index){
$(this).attr(“data-psid-wheel-link”,index);
});
//vanilla js mousewheel event (https://github.com/jquery/jquery/issues/2871)
document.addEventListener(\’wheel\’, wheel, {passive: false}, false);
document.addEventListener(\’mousewheel\’, wheel, {passive: false}, false);
document.addEventListener(\’DOMMouseScroll\’, wheel, {passive: false}, false);
function wheel(e){
if(e.type == “wheel”){
mPS2idExt.support.wheel = true;
}else if(mPS2idExt.support.wheel){
return;
}
if(!mPS2idExt.needScroll((mPS2idData.layout===”horizontal” ? e.deltaX : e.deltaY))){ //check if normal scrolling is needed to reach adjacent targets
if($(mPS2idExt.selector).length) e.preventDefault();
if((mPS2idData.layout===”vertical” && e.deltaY==-0) || (mPS2idData.layout===”horizontal” && e.deltaX==-0)) return;
//trackpad fix (https://stackoverflow.com/a/26514147)
var curTime=new Date().getTime();
if(typeof mPS2idExt.debounce.prevTime !== “undefined”){
if((curTime-mPS2idExt.debounce.prevTime)>200) doc.trigger(“ps2id-scrollSection”,((e.detail<0 || e.wheelDelta>0 || e.deltaY<0 || e.deltaX<0) ? 1 : -1));
}
mPS2idExt.debounce.prevTime=curTime;
}
};
}).trigger(“ps2id-wheel-init”);
});

})(jQuery);’);
endif;
}
}

function ps2id_mw_get_pages(){
//get pages ids as array
$pages_arr = array();
foreach(ps2id_mousewheel_options(‘ps2id_mousewheel_pages’) as $k => $v) {
$pages_arr[] = $k;
}
return $pages_arr;
}
/* —————————————- */

I’ve just fix the issue. It is the plugin Page Optimize by Automattic (not updated since 6 months) who makes conflict. I’ve disabled it and it works now.
Thanks a lot for support.