2 step verification not working

When I try to sign in with me email and password, I am asked to do 2 step verification. On every device, it doesn't work. I enter the code, and press submit, and nothing happens. I have waited several minutes, and nothing happens. If I press submit again, it says the code has expired. If I send a new code, the same thing happens. I am the only one with access to my devices, and want 2 step turned off. I can't do that if i can't get through it the first time.