I remember reading your post but being new to the forums I figured someone else might be more helpful.
While I don't know of a better place to request help for your issue I was thinking that you might be hitting a character limit. I was going to suggest entering your bio in short paragraphs. Saving between. Even better just type "test" and see if it allows that. Write your bio in word or notepad and copy/paste a paragraph at a time into the editor saving between.
Anyone who helps would likely need to know what browser and version you are using, possibly your operating system as well-not sure. I believe there is an issue with the newest version of Internet Exploder. I personally use firefox with ad blocker plug in and have seen some strange things but nothing stopping the operation of the forum. I can't seem to mark any threads as read so there's that too.
Possibly try it in a different browser, I don't trust google chrome but firefox is a free download, and if your using FF your PC should have IE installed. Maybe try that.
I'm not sure any of that is helpful but good luck with it.
Gordy