Changed Gmail password and can't get mail app to update

I had to change my Gmail password (on PC), got the notif that it would stay logged in on my phone, which it has, but the mail app wouldn't load my emails. When I go in it gives me a message can't log in/to verify. I click on it to go update the password but it just has my email address and under authentication says it's signed in with Google, no where to change password. When I click done it just says log in error, check username and password.

I tried changing the password again via account settings and it went through but the mail app still won't change. How do I update it??

Sony Xperia Z1 android 9