The game has been cracked by the lucky cracker
download and install the lucky cracker to purchase (without root, install it)
if the network connection fails during the purchase, please start the game in the lucky cracker

The game has to use lucky cracker crack in-app purchase and remove the network verification
download and install the station within the lucky cracker to in-app purchases without root, the installation can be
if in-app purchases when the network connection fails, in Lucky cracker to start the game, if still cannot connect it is hanging VPN.