Issue with reschedule cards on change not saving on ipad

Hello
I am experiencing a problem with the fsrs application on my ipad..when i click to enable the reschedule cards on change option, the setting does not save. I have already synchronized my user account,but the issue persists.
I have tried restarting the app and the device,and verified that I have the latest app and ipad os updates installed.
Could you please assist me in resolving this issue
Thanks

That’s the default behaviour noted in the tooltip:

Affects the entire collection, and is not saved.

I guess it should be included in the yellow warning box. It’s a unique behaviour and most people don’t read tooltips after all.