Daily Motion app unresponsive and with black screen on iPad Pro 2020 version

This has happened before and when it does the app becomes unresponsive and I have to delete and then reinstall.

The last time it happened the video I was watching, in full screen, came to an end and the screen went blank. The only option available was to replay the video. I selected this and the usual controls appeared at the bottom of the screen but all were unresponsive.

The video I was watching is part of a series and I had expected it to either start the next video or offer an option to choose something to play.

Any ideas.