Constantly losing BAT rewards

Every time I receive an ad I would get my payment, for example, I would go from 1.90USD to 2.00 USD but when I close the entire browser and reopen it I would see I somehow lost rewards and back to 1.60USD. This is happening constantly every time I close the browser and open it back up I end up losing a portion of my rewards. Even my total amount earned is going down with it.

Please advise