The game is fun but since the most recent update adding re-zero characters the game has been unable to load past the login screen on my phone. Since they fixed the above mentioned problem I have been playing and enjoy the game. However, I bought one of the item packs and my Google account was charged but I didn't receive any of my items. Even after closing and opening the game repeatedly plus restarting my phone. I tried the link you suggested and it doesn't work.