Hi,
1. What device are you playing the game on? If you're using NoxPlayer emulator, we recommend using BlueStacks instead.
2. Are you in China? Please turn on your VPN when opening the game if you're in China or some sort.
3. For better support, please give us some screenshot of the notification you got, so we could take a closer look at it (If can't be public, then send it to our email erocondo.project@gmail.com)