I have been looking for a way to transfer game progress of Space Flight Simulator (made by Unity) from a Galaxy S6 Edge to a new Galaxy S9. Please note that /data/data/ directory does not exist on both devices, there is no PlayerPrefs folder, I can't root the S9 as it's still new and under warranty (so can't use TitaniumBackup) and the game isn't connected to an online server (no Google Play Account). I copied whatever files related to the game I found on the S6 Edge (all under Internal storage/Android/data/) to the S9 but it didn't work. I have also tried Helium Sync and Backup (free version) but it seems that it creates backups to be restored on the same device, not a different one.
I have been looking for a way for about 2 weeks now, but haven't found naything. The game developer isn't sure where saved data is stored on the S6. I have also looked in this forum and couldn't find anything useful. Is there any way that doesn't involve writing code (I'm not a programmer), rooting any of the devices or buying paid apps?
Any help is much appreciated!