We're sorry for the inconvenience. You can find more details about supported countries here: https://mzl.la/3QEJZgR

I'm sorry you are encountering those issues. Would you mind please reaching out to our support team? We'd like to troubleshoot what's going on and fix it for you:
https://support.mozilla.org/en-US/questions/new/firefox-private-network-vpn/form

Thanks!