Originspeed

I'm not sure if this is a glitch or not, but for some reason it won't let me login to the Silver server. It keeps saying "Invalid username or password" but I can login to the Gold server perfectly fine. Is this a glitch? If it helps I'm playing on android, if that's possibly a problem. Also, I'm nigh-positive that I have been in the Silver server at some point before so I'm really stumped here.