Both did when I tried them while connected through protonvpn. Not sure about yandex but proton requires credit card payment or phone number even wihout a VPN IP

Both did when I tried them while connected through protonvpn. Not sure about yandex but proton requires credit card payment or phone number even wihout a VPN IP. I use to use yandex a few years ago, they let you sign up now but if you don't give phone number or recovery email at sign up, emails won't show up at your inbox and the ones you send will silently not be delivered.