bvbaked

You do not want page caching in your admin – you would want it on the front end though. The best way to handle that is via a plugin and you may already have one just not active? Memcached would be something added on the server so you could possibly request from your hosting provider

The admin shouldn’t have a lot running there, so I would guess any slowness comes from the hosting or if you are using a lot of plugins

It is possible you still have the old files still there?

These might be getting in the way of WordPress picking up the URL and passing it to the proper templates. It may be named something like index.html and if one exists try renaming it

It sort of sounds like you have added some css or styles that are added to the frontend but not in the editor.

You may want to look into the wp_enqueue_block_style function so it applies in the editor as well, or some other hook to achieve the same. Without knowing where it has been added I’m just not sure offhand which one you’ll need to use.

The previous advice will solve a plugin issue, but errors like this aren’t always plugin problems.

If you didn’t receive the email mentioned, you can use this article to help you turn on debugging which should provide information about the error. That might also be a more straightforward way of getting to the issue.

If you can get and share the error message, someone may be able to help from therer

There are no limitations to how many pages an image can be used on. I’m not sure what you mean by ‘attached’ either, since other than setting it as a featured image there isn’t a way to my knowledge images are assigned to a page/post other than in content.

Is this a feature of your theme? How did you attach them to the first post? I would guess you can do the same to the second and it would act the same

In something like this you wouldn’t be filtering the form submissions but rather a post type that is created based on the submissions. The reason I say this is unless you write the entire database queries yourself, there is not other built in method to query and filter. Al forms would store the data in a different way so you’d have to pick one first and write a lot of logic around how to pull it out

I’m sure there are others that do this, but the one I have experience with is Gravity Forms. It allows form submissions to be created as a post type, but you’ll also need something to handle custom fields to store other information.

I wouldn’t expect you to need to increase the execution time for this and this type of error probably hints as something bigger going wrong.

If the email didn’t send, the PHP may not be working to send it, but maybe it logged an error at least? You can use this guide on debugging if needed to help narrow down the issue by seeing if you can get an error message. It is also possible your host can provide this information as well

See if this works for you https://codex.wordpress.org/TinyMCE_Custom_Styles

I think it is what you’re asking for and would add specific selectors to the format tab. The Header 2/3, paragraph etc.. you mentioned controls the elements, which is not the same as adding a class or style and as far as I know they have all the elements you would want already covered