paulwpxp

There is this inline style height: 84px; min-height: 176px; in div #masthead-sticky-wrapper which theme demo doesn’t have. This means the style must be injected via theme options setting or page builder configurations. I suggest looking into it and change it there.

There is this new feature in WordPress 5.3 that allows users to upload big image file (threshold being either width or height of 2560px) and the core will scale it down.

I suppose the problem you are facing is with the WP All Import plugin, I suggest reporting this issue to the plugin author so that he/she could update the plugin to recognize the new scaled down image file name.

Meanwhile there is a workaround, we can disable the new scale down big image feature with just one line of code, see detail in this link below.

https://make.wordpress.org/core/2019/10/09/introducing-handling-of-big-images-in-wordpress-5-3/

also there is a plugin to do just that
https://wordpress.org/plugins/disable-big-image-threshold/

There are changes in gallery markup in WordPress 5.3

see detail in this section > Gallery block markup update

Block Editor Theme-related updates in WordPress 5.3

Simply put, some themes need to update the CSS, I suggest contact the theme support notifying theme author the issue so that s/he can update the theme.

To set social links is to create a menu with any name, saved, and then assign the location to the menu.

Add Social Icons
https://wordpress.org/support/article/twenty-twenty/#add-social-icons

To adjust the social links color, please refer theme doc on Custom Colors.

Custom Colors
https://wordpress.org/support/article/twenty-twenty/#custom-colors

We can also further adjust social links color by overriding the theme’s output using Custom CSS (use the code via Custom CSS option).

I believe this code should do it (change the color code to your linking).

.social-icons a { background: #000; }

If the above doesn’t work, try this, which has more specificity on selector to win over theme’s output

body .social-icons a { background: #000; }

If that doesn’t do it, use this

body ul.social-icons li.menu-item a { background: #000 !important; }

I’d double check on Static Front Page setting (see link below if you’re not familiar with). I could be that somehow you set it while trying out other themes.

https://make.wordpress.org/support/user-manual/content/static-front-page/#configuring-wordpress-to-use-your-static-front-page

Use this example in Code Editor mode, not Visual Editor mode.

<ul>
	<li><a href="http://example/people/johny">Johny</a></li>
	<li><a href="http://example/people/debbie">Debbie</a></li>
	<li><a href="http://example/people/henry">Henry</a></li>
</ul>

So that is it, just replace the link (direct URL to each sub-page) and the page title.

You mentioned having 2 level depth sub pages, which I personally think making thing unnecessary more complicated, but you might have good reason for it. To do that see example here https://www.computerhope.com/issues/ch001703.htm , basically we just need to nest another set of <ul> within it.

If you like the idea of manually creating the list, don’t be put away by the code, there are only 3 really simple HTML tags here: <ul> , <li> , <a>, you can search for tutorial on how to use them.

But manually doing this is only good for when we have small limited amount of pages. There are plugin solution that automatically lists subpages (and much more options), it’s good for when we have lot of pages to manage, and it’s less prone to making mistakes. Shown here are just few of them that come up in the search, please look around and don’t be afraid to try them out.

Page-list
https://wordpress.org/plugins/page-list/

Content Views – Post Grid & List for WordPress
https://wordpress.org/plugins/content-views-query-and-display-post-page/

Display Posts – Easy lists, grids, navigation, and more
https://wordpress.org/plugins/display-posts-shortcode/

What I envision is for visitors to be able to open the page and find a list of individual names and they could then click on the name and access a portfolio of photos of that individual.

There are many ways to achieve that like using Page/child-page or using Posts with tag (or category).

If you want to go with Page/child-page, just go ahead and create a main or so called landing page to host all the links to child-pages, the create each page assign as sub-page of the main page. In each of child page, name the title as the individual name and put in text and image in the content area. In the main page, just manually make a clickable link to all those child pages, or use some kind of plugin to automatically list clickable links to its child pages.

To use Posts with tag (or category), create post with individual name as its title and put in text and image in the content area, and assign a tag (name the tag like “People”), use the tag archive link in the menu, when user click on it will lead to the tag archive page automatically created by WP, which shows links to all the posts within that tag.

If you have some kind of security plugin installed, see to it that it’s configured properly.

Check file permission (do this only if you know how to SFTP to the site)

Changing File Permissions

Check .htaccess , we can just delete it (or save it somewhere) and then visit permalink setting page and click save, WP will regenerate a new one.