I found myself the answer : with sidequest file browser
- Save PlayerData.dat and PlayerStats.dat from sdcard/Android/data/com.electrichatgames.tothetop/files (to the top is without _al)
- go to sdcard/Android/data/com.electrichatgames.tothetop_al/files/cloud/data/
- drag and drop the previous saved files in this folder.
It worked for me!