It used to be great, it stopped working

I found out why: the plugin tries to “phone home” to https://layered.market each time it loads and that URL is no longer working. Create an entry in /etc/hosts for this:

0.0.0.0 layered.market

It will start functioning properly again.

If you do not have access to your /etc/hosts you can comment out lines 340-353 and return NULL:

/**
                if (isset($_REQUEST['if-menu-recheck-plan']) || false === ($plan = get_transient('if-menu-plan'))) {
                        $plan = false;
                        $request = wp_remote_get('https://layered.market/get-plan?site=' . urlencode(site_url()) . '&fo>

                        if (!is_wp_error($request)) {
                                $data = json_decode(wp_remote_retrieve_body($request), true);
                                if (isset($data['plans'])) {
                                        $plan = $data['plans']['if-menu'];
                                        set_transient('if-menu-plan', $plan, 500);
                                }
                        }
                }


                return $plan;
*/
return NULL;