I tried to use it, but it keeps saying my password doesn't match even though I checked and it does.
Please try to fix this soon? :c 20$ is a lot to spend...
Change your password, login again and wait 5 minutes. Then try again. Your USD are not wasted, don't worry :)
Oh that would stink if you ended up not able to use it, but I have never had a problem with the Cash Shop items so!
I would have to agree with Lain on this one.