Same problem with me, and it started today for not just me but many other users. Seen several ads today and not a single fraction of BAT added except when opening new tabs.
I noticed in another thread, one of them said his account of the wallet was flagged for no reason by the automated system. This may be happening to multiple users. Also since crypto was down, many people reported seeing a decrease in earned BATs when viewing ads and opening new tabs recently. Do you know hard it is for me to earn 25 BAT and then convert that to BTC despite a very high transfer fee?
I wonder if @Mattches and/or @steeven will able to fix this to many users having the same issue. This may be a technical issue that devs need to address and hopefully can resolve the issue soon.