The list of accepted countries and rules are established by IDnow service.
So, If your country is not available in the list there is always an alternative solutions for non-accepted countries.
You can buy for example bitcoins - https://localbitcoins.com (or with any other bitcoin service) and then deposit it to your wallet and after depositing exchange received bitcoins for waves or any other supported assets.
Thank you for your understanding!
Customer support service by UserEcho