BAT rewards, Custodial accounts and Nigeria

This would be based on the partners, which primarily is Uphold. As you can see at https://support.uphold.com/hc/en-us/articles/360026786712-Non-Supported-Jurisdictions they currently aren’t allowing Nigeria for new accounts. When they restrict accounts, they generally also limit API access and all for things like Rewards.

Brave is not currently thinking of adding any new custodial partners as they are instead pushing for on chain payments.

Read through PSA: Current and upcoming changes to Rewards and Creators and the links I provide there.