Region not supported nepal account

Currently only few countries are supported. You can check the supported countries below

https://support.brave.com/hc/en-us/articles/6539887971469-Supported-regions-for-verifying-Brave-Rewards-with-a-custodial-wallet-provider-

However, there is some light at the end of the tunnel. Brave are working to bring them back. You can follow updates in the post below