YouTube Premium Cancelling Memberships With Inaccurate Country Information
YouTube Premium is cancelling memberships where the subscription country listed on the user's account does not match the user's actual location.

Subscription prices for YouTube Premium vary by country. For example, the monthly cost in developing countries such as India, the Philippines, and Nigeria is significantly lower than in developed countries like the United States, the United Kingdom, or Germany.
Some users based in developing countries have been exploiting this opportunity, by registering accounts using countries where YouTube premium is cheap.
YouTube has begun identifying and cancelling such accounts. If your subscription location does not align with billing country, then you should expect to receive a membership cancellation email similar to the one attached above.