Why can't I connect or reconnect to Uphold?
There are two main issues that may affect your ability to connect Brave to Uphold.
First make sure you have fully completed the KYC process with Uphold and provided all information they require. Even if you have already passed before, sometimes they ask for additional information.
The second reason is for Android only:
If you have the Uphold app installed and it is handling the link to Uphold it will prevent your from verifying. To fix this problem you can uninstall the app then verify. You can reinstall the Uphold app afterwards if you need it.