Apparently this bug has been reported numerous times, and each time the response is that it's been closed because the person didn't keep complaining. I have two laptops, with the app installed on each, and it's happening on both. One laptop is running Mavericks, the other one is running High Sierra. Both have the app installed. Both will simply freeze when an ad starts, though a concurrent odd behavior is that I'll get two ads, then a third will start and be cut off by music. I have now restarted the app on both laptops, multiple times today, and I've even reinstalled fresh on the Mavericks laptop. Nothing's fixing it.