I face a serious problem that keeps me from working. I had been making a presentation in Keynote on iPad (8th-gen) for about 4 hours and everything was ok. Suddenly, Keynote stopped saving my presentation, and I can no longer share it and add new things. I have enough storage on iCloud and in the iPad storage. Also, I checked the Wi-Fi connection which is ok. I'm running the latest version of Keynote. iPadOS is 14.0.1
I don't know how to fix it. Help me, please.