[Closed] Gameplay does not sync to cloud

Product: The Sims Mobile
Platform:Apple iPhone
List the specific devices you play with (e.g. iPhone 6s Plus, Samsung Galaxy S7) iPhone X, iPad Air 2
OS Version 11.2.6
Player ID: (Find your Player ID in Sims Mobile: https://help.ea.com/help/the-sims/the-sims-mobile/find-your-player-id-in-the-sims-mobile ) 1003447371410
How often does the bug occur? Often (50% - 99%)
Steps: How can we find the bug ourselves? After playing from one device, switch to another. Ex. Design your home/sim/buy something etc. Switch to another device. Doesn't matter if you forced-kill the app before switching, or placing the app in the background, you'll eventually lose some progress. Minor changes are not noticeable, but try pimping up your house and do the switch right after that.
What do you expect to see? The game is synced properly between devices. There should be no loss of items/progress between devices.
Connection Type Wifi
Please select your region Europe
Country Germany
Additional feedback Most of the time, if not always, the device you recently switched on has an earlier progress than the previous device. And then if you try to switch back to the previous device hoping to get your latest progress, the game is already synced (with you still losing the progress).

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I tried force killing the app before switching, or putting the app in the background hoping it would trigger the saving process, but I still lose some progress. I've been playing tons of online mobile games and I don't have this problem when switching between my devices.

How is the saving mechanism triggered? When does the game save our progress? Is it every X minutes(please say no)? Is it based on user-actions(I would've expected this but it seems not to be the case)?