Panda pop suddenly stops playing 30 ads that let you get free boosters, free life, or free 10 throws if you watch a 30 second ad for other games. It's not my device, I had it checked and was told it's more likely a bug in the app itself. How do I fix it where I can watch those ads again for free boosters?

Being on same level (382 for me) sucks. But my game all of a sudden will not play ads anymore that gives you a free life, or 10 free throws, or other booster then suddenly It stopped doing it. I know it's not my device, I had it checked. I was told best guess was bug in the app itself. Way to fix it anyone?