Lab 1a

I made my account and followed all the instructions and got the verification email to log in on my phone. when I decided to start working on the assignment on my laptop I tried to sign in but it kept telling me to check my username and password so did and I was entering it correctly. So I tried to log in through the verification email and it still didn't work. I then decided to just make a new account. With my new account, I completed the lab up until the mobile app download. When I downloaded the app and attempted to log in I got the same message I was getting before even though I was entering the information correctly. So I just decided to skip that part and continue the lab on my laptop since I was still logged in. After I finished the lap and attempted to download the grader app I was prompted to log in again and once again I got the same message even though the info was corrected. Even when attempted to forget the password and reset it once I got back to the login page it wouldn't work. I'm not sure whats wrong, please help.