Do you have multiple devices linked to your Uphold? If so, how many?
I do have one PC with uphold wallet linked and verified and 2 mobile phones running with Brave. All 3 are synchronized but 2 mobiles wallets are not yet verified because on both total BAT value is below of 20BAT, as requested.
Can you share a screenshot of your Contributions and Event Log tabs which can be found here brave://rewards-internals/