Client Crashed Before Game and Now I Can't Log In

As the title suggests, my game crashed and I can't log back in.

I closed League when the client crashed before game, but when I tried to log-in again, it told me that my log-in credentials are bad.

I changed my password twice and I sent a reminder as to what my username was just in case I fucked that up even thoguh it has never changed. Yet it still says that my password or username is incorrect. That is just inaccurate.

Help