Posts keep getting wiped

Hi there,

I’m very new to WordPress and I am having some difficulty with posts. I have upgraded to the latest version and now I cannot seem to post any content. I’ve written a post three times and added the media links and when I click publish it would not work. I then deactivated and reactivated the plugins and this allowed the post to e published…however, it wipes the entire thing clear!

So, a post that has text and media (Videos using URLs) gets posted with only the title and no content AND it wipes anything on my dashboard so as all the work I have done has gone with no way of recovering it!!

Any help is really appreciated!