I found the answer. Use your a file browser, I used ES file explorer3, find the file called com.glucredits.dh in android, user, data. I deleted the file and restarted the game. It gave me back the last gold I had before it stopped working, and now the system works normally. I lost like 50 something because it wasn't…
I had about 118 gold coins before downloading area 13, now I have zero, and the game has not saved anymore even after leveling up 4 times and completing bonuses! Android, DH14 version 2.4.0.