Pop up to watch video to earn gems, when you tap on watch, then a video failed to load message pops up since midweek. Don't know what video doesn't load since it fails to load message pops up as soon as you tap watch. Since I need 1600gems to get a green oven. It can be annoying. This is happening in other S8 games as well or no rewards for pop up ads with no way to close ad and you are held hostage unless you do a cold shut down. Not great for your devices.