The list is of supported regions, not of non-supported. So with South Africa not being on the list, it means you’re currently not supported. They are slowly bringing regions back as they can. France was restored not long ago. They tried adding Brazil again before the weekend but had issues, so had to remove Brazil.
There’s not much you can do except to just wait. I post updates as we learn them at PSA: Unsupported Region if you want to check there on occasion. Otherwise keep an eye out for official announcements when they make them, which they try to pin here on Brave Community for a few days before unpinning.
The time for regions to be added are unknown. At the current rate, I’m going to say the shortest time will be 3 months and it might even be a year or more. I’m hoping Brave surprises me and regions all get added again sooner, but I’m trying to assume the worst case scenarios.