Sorry, before i never install the game. And I'm trying to install mod apk. It says "app not installed".
And try to install pure apk. Do the game tutorial what you said. And try to overwrite to mod apk. App not installed.
And i uninstalled pure apk, then try again to install mod apk, still not...
Hmmm its normal rate i think. 2 hours been played. Still in rebirth 2. No T9, T13, T14 and T15 wing at bound dia shop. So, i think you just give player free dia and gold.