Credict One Bank review: Not being able to sign into my account/today I cannot even pull the page up

I have been trying to sign into my account for over three months and I haven't been successful, and I can only pay my bill over the phone i have tried changing my password and I still couldn't get in but today I can't even pull the page up. I'm not sure of what to do but I haven't been able to see my account and what I've spent in several months. So, how can this be resolved? I would really appreciate your assistance.