[choo-t]

Afaik Youtube cannot legally display ads to some countries' residents, it could explain this behavior.

[zeroadsever]

The above is true. Some countries don't get ads. Lucky them. Albania, Cambodia, Ivory Coast, Laos, Myanmar, Macau, Madagascar, Maldives, and Russia.

Use a proxy server/VPN and go ad free.

[fastball]

Presumably he lives in the same place as his girlfriend.

[choo-t]

She may have created the account abroad.

[anticensor]

Why don't they serve placeholder unpaid noncommercial ads (YouTube features, government services) to such users instead?