You are currently editing the page that shows your latest posts

After changing the site domain, I found out that the text editor for both Posts and Pages are missing.
There is this remark: "You are currently editing the page that shows your latest posts"

And I also have problem with Media Library, when I tried to set up Site Identity. After clicking the "Save and Publish" button, the favicon did not appeared.

Then when I went back to select image, there is no images in the library. just a grey box. And it hung. The arrow icon kept spinning.

 

I read that to fix this problem is by adding Auto Increment to my primary keys in tables wp_posts and wp_postmeta.
Could someone explain to me precisely how it is done in simpler language?

 

Easiest way is to go to your phpmyadmin
Click the table name
Next to the primary field name click change icon/link
Here you can set the field to be autoIncrement

I don't think that is the problem though...

 

Below the post title box there is this: Permalink: ?preview=true

 

The problem is

The problem is fixed. Thank you folks.

 

Hi man. I sent you a private message... if you can help me. Thanks!