Brave ask me to solve a captcha but don't show it

Hi,
I have a popup when I open brave that ask me to solve a captcha to prove I’m human. But when I clic to solve it, it open the reward popup and i have a white square in the middle with ¨ grant.rewards.brave.com don’t authorise the connexion." inside. Someone can help me please ? thanks in Advance.

Support team has noted the issue and his looking into it. @chriscat @SaltyBanana

I found a temporary way to resolve my problem : right click on white square => inspect => find the iframe and copy the URL inside => open it in a new tab.

You will be enable to resolve the captcha, It can take some time for the white square to disappear maybe restart the computer.