e-services passwords expire every six months. Did you remember to change it? You can't use any password remotely close to any you've used in the past four years either. And they wonder why folks do the forbidden and write their passwords down (hopefully not on a sticky note on the front of the computer screen).
Logging into e-services is always an experience. I am registered for three users (one for where I work and TWO for me?) If I can't get in under one I just try another. Sometimes nothing happens, or it brings me to the welcome screen for e-services (no access to transcripts). So I just try again, same user or different, and eventually it goes through. I believe that sometimes the system just isn't working at that moment. Often I just exit and start all over again and get in.
Try giving e-services a call. I found them to be helpful when I registered but still couldn't access transcripts. They said I had to efile X number of returns before I could get in. (There's a rule about that--is that your problem maybe?) When I told them I was an EA exempt from that rule, they acted surprised and said no one had checked that box on their end. I gained instant access. Even so, getting in is frustrating but I persevere and usually succeed eventually.