These Ads complete then return to the game and do not attempt to give a reward, just carry on as if nothing happened. They start with a black screen and a white circle whilst loading, play the ad, then return without any interaction, so you couldn't click anything even if you were interested enough to look further.
I thought it might be my slow connection speed, but this weekend I am somewhere with fast fibre and the problem is as bad if not worse.
1 or 2 this week only for me.... ALL others are ok... It's every time exciting when the screen gets darker after the ad...and the question is: reward or no reward?