Been touched on already, but just want to reinforce.
Are you using a VPN by chance? This can jump you all over the place. While not against the rules, it is also not supported. So if your logins jump like that, they will lock the account to play it on the safe side
And do you have an authenticator? This will most likely eliminate the issue entirely if you do not. You can download it on the Google Play store, or the Apple store. It is free. If you would prefer a physical copy, you can purchase one in the shop as well.