In your profile on Uphold, it should indicate on the same page where you find your Uphold id if you are verified and show the date you were verified.
So, log into your account at Uphold and check if you are verified. If you are not verified, just follow instructions provided by Uphold to complete your verification process. If you are verified, then just DM a moderator and provide the information requested as posted above:
- Copy/paste your Wallet ID (found on brave://rewards-internals )
- Your OS and Brave version (first three lines in brave://version )
- A screenshot of your Rewards panel in `Settings → Brave Rewards
For future reference, you shouldn’t post your ids/logs in the general forum for privacy purposes. 
@Mujjabs You are just going to have to wait until you get a slot unlinked. You may still run into problems afterwards but can’t proceed until you get a slot open to link your device. Make sure your device passes the SafetyNet check. If it doesn’t, you will not be able to verify it to a custodial account.
edit: I must be tired. Keep making mistakes, sorry. Updated within text.