HOOP app for Android/iPhone/iPad may not work for you due to some issues your device may have. Please check if your internet is working properly. If you are using a Wi-Fi connection, turn it off and on once to see if it helps. Also, please reboot your Android/iPhone device to see if it helps. If none of the above methods work and you feel that it is not a common problem for everyone, then please let us know using the comments section below. Our community can help you fix the problem.