[AC Question]

I have a new Moto E (2nd gen) phone and I already signed in with a google account successfully. But when I try to add another gmail account, when I get to the password confirmation screen and type in my password it says "try again".

I can sign in to this email acct just fine on my laptop or any computer. I have already tried updating the gmail app, clearing data, changing gmail setting to allow less secure devices, and even enabled 2 step verification and created an app password. No matter what I do when I type in my gmail password it says try again.
Can anyone help me? I need to add this gmail account so I can sync my calendar to my phone.