Images are too small to see I'm afraid. Is the first screen showing how article is being shown in joomla panel ? If yes than it's most likely a broken joomla installation. I would start with reinstalling joomla. What PHP version are You using? Is console showing any errors?
None of our products is affecting article edit page in panel, and from screenshot it's clearly some error on this page. Try reinstalling joomla in case problem is coming from a broken file. If this will not help send me an access to joomla panel to my email [email protected]
Just found Your mail and checked article page, but there are no error messages on site or console, so it's hard to tell what the problem can be. I've disabled all the extra plugin used on this layout and there is no change as well. It's 100% a joomla panel issue. Try overwrite joomla files with a clean installation and if this will not help, report this to joomla developers.
I've just run an extra test with a scanner, but looks like joomla files are intact. The other thing this problem can be connected with is an old PHP version.