I use Brave on both my home and work PC. Both synced with my Uphold wallet.
I have received my BAT on my home pc, but not on my work PC. As the IT/Developer, I checked firewall rules, etc. Nothing would be blocking, and my workmate successfully received it on his work PC.
I figured I would wait till the next month to see if it works, but now I have noticed all accumulated bat from the previous month has disappeared.