There seems to be a bug, it is being worked on yet.
Not sure how many people are impacted, but know in the past couple days, there have been a few who have written in to talk of how no ads are being shown on their Android. I was able to replicate this myself and have reported it to the Rewards team and Support. They are busy looking over logs and trying to determine the overall cause and solution.
Just wanted to advise that if you’re on Android, it’s possible that you’ll not be seeing ads for Rewards at this time until they can get it resolved. …