I'm an administrator on a wiki and I've been having this problem for a while now. no matter what, I can't paste anything into a page, or delete the text on the page to replace it.

After my edits kept getting deleted while I was editing thanks to the buggy desktop editing, I got fed up and decided to just write the entire thing on a different platform and paste it in. but, it doesn't allow that. i can type anything in and they save fine, but no matter what it won't save anything I paste in. this is ridiculous. I get it's to prevent spam, but our wiki has been raided multiple times by random people and they don't have this problem, and I have to ask my friend to paste things in for me because i can't do it. what's the problem.