Thanks for the video.
That button to claim rewards should not appear there at all. The earnings are transferred automatically to Uphold on the 8th of each month. So, in two days you should receive the earnings from February.
I would suggest waiting until then and see what happens. The status of payments can be seen here:
In case the earnings are not received after the status is shown as “complete”, you can contact Brave Support by opening a ticket in the following link