If you get to this page, you're one of the people who actually read this blog and won't complain that your Account is gone by accident, wrong APK/ Installation file or self-hacking.
Let me show you the simple way how to Save your Units, your fruits and all the gamedata you have: Important !: If you switch from Android to iOS or iOS to Android you will loose all the remaining fruits you had before.
1. Change Device
2. Issue Password
3. Hit the "Issue" button
4. Your whole gamedata is saved from now on for 3 months !
i censored my password here.
You can screenshot for youself, or hit the right button "Send Mail" to send yourself a mail with the password.
You don't need to immediately login again. You can play with this saved id+pw like before, but after 3 months it won't be saved with a password anymore. So you have to redo the saving just in case you accidentaly uninstall or broke your device.
5. Hit the upper right button "Support"
6. Hit the "Change Device" button
7. To login with the saved Account you have to input the last saved ID and Password. Remember ?