"login Invalid"


I am working with a client to fix their website that is hosted here. Every time I try to log in it says "login invalid" and it seems like this is a very common issue that a lot of people on this site have dealt with which is INCREDIBLY frustrating. I cleared my cache and cookies and it still has not solved the issue. It occasionally goes from "login invalid" to "site cannot be reached" and then i cannot access anything for a few minutes. ANY help?