You should be able to recover your progress if you are connected to the internet. We suggest you try the following to see if they help you gain a better connection:

1.) Restart your router.
2.) Restart your device.
3.) If you're using mobile data please try a strong and stable WiFi connection.
4.) Try a different location with different Wifi.
5.) Check if you have any VPN/PiHoles active on your network that could be blocking Idle Bank Tycoon.
6.) Contact your internet service provider to check your connection.

After that, please complete the initial tutorial in the game. You should then receive a panel and be able to recover your savegame.