Hi and welcome. 
At this time, moderators are handling support requests on missing BAT rewards via Direct message (DM). So, just DM a moderator, explain your problem, and provide the following information for each device you use for Brave Rewards:
- Copy/paste your Wallet ID (found on
brave://rewards-internals) - Your OS and Brave version (first three lines in
brave://version) - A screenshot of your Rewards panel in `Settings → Brave Rewards
Mattches and Steeven are the moderatos who handle most of the rewards issues.
How to DM a moderator:
- Click on their icon and select the Message button in the top right corner or
- You can go to your profile and create a new message in Messages.