Couldn't save your app almost everyday!

Hello all,
I have a pro app and almost get this message more than 5 times a day! is it related to the size of the app since my app has many features? It makes me confused as I have to go back and check which data hasn’t saved yet etc!!

is there any solution for this @david
Here is my app link:
yallatoastmasters.glideapp.io