Training Videos Won't Play

None of the training videos in my app are playing. Also, the videos I have downloaded to my phone are not playing either. My phone is on the latest iOS version. I deleted the app and reinstalled it, but the problem persists.

After the update by Freeletics, everything works as it should.

Yes, we did not communicate it broadly, but this bug was indeed fixed recently.
It was only affecting a few users/devices/videos