How come I cant send someone a message?

A girl on here sent me a msg and I tried to send on back and umm it sent me to potty training dog youtube video thing does someone know why just became a member a couple of days ago not sure how this all works yet
Help please

im adensmomma06 and I put in this question and it says its fau what the heck is going on???

lol, ok the youtube video happens when there's an error with the page. Try again later on. Or try posting a comment instead.

The fau thing happens when you go to all your questions and change it to anonymous...

If you didnt do that you may want to talk to thedude, there have been a couple of bugs recently...