[rmidthun]

I once registered a password using a special character, but I could not get in. It turned out that they url encoded it, if I used %21 instead of "!" I could get into the site.

[joegahona]

I'm guessing you're the only user who figured that out. I would definitely request a password reset.

I saw a screenshot of an error dialogue on Reddit once (so possibly fake, but still hilarious) that said something like:

"You cannot use that password, because it's already in use by user Kegstand360"