I've experienced the same.
I have made some progress though.
If you grab the macOS wrapper from here (https://worldoftanks.eu/en/content/soft/pc_programs/1312/
) it appears to work, but the performance is poor.
I've tried mv-ing the bottle contained in the WG wrapper into CrossOver 21, and it shows up and says it needs an upgrade.
When select upgrade nothing appears to happen.
I'm still investigating, but seems like it should be possible to get it working with the latest CrossOver.
This is my first time on the forums here so no idea if they monitor it, but if can get it working and the performance is there then you'll have a sale.