I DID it on my 2 phones, you're wrong.
It works, but only with mod versions from 5.2.2 to 5.3
5.2.2 : you get your save, but you can't log in (because the game force you to update), at this moment, you can believe it don't work, but continue...
When the game ask for update, quit the app and install the 5.3 without deleting 5.2.2 (important)
5.3 : you can load your game because link has been done previously in 5.2.2
It's magic