try sending a mail to [email protected]

We store cloud saves only for 6 months, more info here: https://infinitode.prineside.com/?m=game_terms_and_conditions
We also make backups of your progress, in case your local progress gets corrupted somehow and you upload it onto the cloud.
If you are going to abandon the game for 2 years, please remember that your progress will only be preserved on your device locally and we can not access / preserve / restore it.
The only exception is the Double Gain purchase, which is usually stored on Google / Apple servers or can be linked to your account through the game so it not gets lost.
In case you've lost your progress which is less than 6 months old, contact sup.prineside.com