@Clumsyknight,
Before anything can you please go to Menu --> About Brave and ensure that the browser updates itself to the latest available version (should be v1.15.72 at this time)?
@Clumsyknight,
Can you check and confirm for me that you see the same message in the Brave Rewards panel (the one that drops down from your address bar)?
I had that problem too…And because I had an HDD every time I open Brave, my disk usage was 100%. I had not an Uphold walled. My solution was to reset the wallet on Brave. I don’t know if that delete also what do you have in Uphold. That happened because I get a BSOD while Brave was opened, and that make Brave to lose some data I think.