What country are you from? Recent changes have been made to supported countries. Posted the notices from support staff below. I think Uphold also changed their non-supported jurisdictions recently. You might want to go check there too.
Some users were able to receive payouts even if in a non-supported country as long as they stayed connected. If they were disconnected for whatever reason, they received the notice, and could not reconnect.
NOTICE: New region restrictions on verifying Brave Rewards with Gemini
NOTICE: New region restrictions on Uphold (very important info for users in Hawaii)
Changes to Brave Ads Regional Availability
Wallet Connections are Temporarily Blocked in Turkey
Also check