paulwpxp

You can use any Add Image Class plugin like this one https://wordpress.org/plugins/image-custom-class/ (I hope it works with the latest WP) and insert the class name that you want for pinable image.

And then in the setting of any Pin-it plugin that allows users to input the classes to include/exclude and also the ability to limit the pin-it to only single post page, like this plugin for example https://wordpress.org/plugins/jquery-pin-it-button-for-images/

Now the pin-it will only active on single page, and not on any arhcive page.

To exclude images in related post area, put this in excluded classes (disabled for pining) jp-relatedposts-post-img (this is specific to the related post plugin currently in use.)

Only image in single post that has your enabled class will be pinnable at this point.

Anyway, if you are comfortable writing some html in WP text mode, we don’t need the add image class plugin. You can just switch to Text mode right after you’re done writing post and find the <img/> tag that you want to add class (to allow/enable/include pin-it) and just add it manually then switch back to Visual mode and click publish or save post. This is, by the way, only for those familiar with html, and sometimes switching back and forth between Text mode and Visual mode causes problem but this happens rarely and depending on themes/plugins in use.

We have to find out which plugin or custom function that the shortcode belongs to and then re-install/activate it.

If that plugin or custom function is already in place, try disabling all other plugins and re-enable one by one to figure out the one that conflicts with it.

First of all, please do make sure that the plugin is responsible for that one line of code. With plugin activated, do you see that one line of code in the plugin setting?

The other concern is that uninstalling a plugin might not remove input kept in database, with plugin activated go to plugin setting and empty the input and then save that empty input.

The point is we need to figure out what plugin or function is outputing that one line of code, and then remove it.

This is normal in WP and it is not a problem to fix (no need to redirect).

If you view source on both pages, you would see this same canonical link in HTML head, so search engine will only recognize one page.

<link rel="canonical" href="https://shkatulka-krasoty.ru/krasota/uhod-za-volosami/otvar-iz-romashki-dlya-volos-natural.php">

I could see this 1 line of code injected at the very last line before closing </body> tag.

<style>.flex-col{display:none !important;}</style>}

Yes, it includes the } at the end which is super weird but it indicates it’s a user put in probably from a plugin that allows putting in scripts and styles?

So please find out which plugin or function is doing that, then remove it.

This article is just for you
http://www.wpbeginner.com/plugins/how-to-add-old-post-notification-on-your-wordpress-blog/

The Broken link checker plugin is also a good idea
https://wordpress.org/plugins/broken-link-checker/

If it’s newly moved, dns propagation takes some time, users visiting the same domain might still get to old site.

You can still keep the old site, no need to deactivate your account there, but you just need to make the site private, under Settings »Privacy Settings, this way no one except you won’t be able to view/access it.

The theme you are using is a commercial theme from templatemonster, and it says on the site that it offers 24/7 support. Please use that support channel to get the help from people who know it the best.

Sometimes, this kind of problem is caused by server cache. Shared web host nowaday would install a caching system to help on loading time. Users must learn how to purge the cache when some changes made to the site in order to see the changes right away.