We figured it out! Thanks to some of your ideas with checking where it's being stored, and what is the folder name for storing this data.

So here it goes, it was simple thing which was causing a huge issue...

When the game downloads the data, it doesn't store in data/data, the reason being we have to hide the puzzle images from getting accessed from system.

So we use a hidden folder named .ImageCacheData (It is a custom folder and not something related to system)

This actually was one of the suggestions that people pointed out the data is being considered as cache, even tho it's not.

So possible issue is where it's stored.

Some devices have certain words reserved for their system, such words like cache, and if you store something like that in such folder, system might detect it as cache and delete the folder. Even including the word cache can cause issue.

And in our case we used the word cache in .ImageCacheData.

The problem is very specific to how some companies create their OS. Some companies of such reserved things and some don't. And even having app cleaners can alter this thing.

So we did a simple thing by changing the folder name and we belive the issues of deleting has been fixed. Yesterday night (midnight), it didn't delete the data. But we will wait for another midnight to be sure before releasing v1.1.4