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What version are you using? Should be Version 0.56.15 or above. This is their Telegram channel https://t.me/batproject

old 0.23.79 , I will update now

I had the same issue yesterday and asked in the Telegram channel they told me to check the version. When I checked I was still on the Beta version. When I updated it worked fine.

after update I got "Bravo!It's your lucky day. Your token grant is on its way." :)
however now my version is 0.25.2 ... this isn't the last ?

Mine is Version 0.56.15 Chromium: 70.0.3538.110 (Official Build) (64-bit). I had 2 versions on my computer in different directories. The newest version for me was in C:\Program Files (x86)\BraveSoftware\Brave-Browser\Application so I uninstalled the older version.