Content disappearing when updating posts

Hi!

New here so hope you understand, but I’m totally in pain with this.

I published the pages from localhost XAMPP phpMyAdmin to public host’s phpMyAdmin, transferred files by FTP, and did all the necessary edits. Now I don’t know what I have done wrong..

I made everything work and passed through Error 500’s and so on..

But now. Everything else on the pages work, except images (because of the faulty permalinks), but when going to a post or page, editing it, and updating it… ….it all disappears. Empty content.

Disabling plugins don’t work, neither modding htaccess -file permissions or switching theme. Tried to extend wp memory also.

I can sometimes type in 3 characters and it manages to remain the one only word…