@drhoops21, that's correct - you can log into your account using your Twitter, Facebook, or Google acount as long as it's the same email address.
I don't know why your password stops working. It should never expire. Is it possible someone else is logging into your account and changing it?
Also, one thing you should know - the TRIGGERcmd forum account is separate from your TRIGGERcmd account you use to trigger your commands.