This might be the issue but in my case I check every time if I get paid for ads (LOL).
I found some weird behavior. First before updates I wasn’t getting paid for tabs ads even for once and there was no issue of region. After update I was still facing the same issue but after some time it starts counting the ads and I was getting paid but later it again started to not count tabs ads and I wasn’t getting any bats. However it was the same sponsored ads which I was getting paid before but not now. rip
update:- I tried opening some tabs and I start getting paid. I think the rate of getting paid from sponsored ads is like (8/10).