You have to write it down or screenshot. If you didn't provide support key. JW Alive support team can not help you. Once you get in the game go straight to settings (tap your level) and save your support key. Now just be patient like me may be tommorrow you can log-in.
Today It's working for me now with no reason. I think It's because server-side problem. Yesterday I try to download original game version with another phone and didn't use spoofing app. Notification pop up the same. Just be patient because It's nothing we can do to solve it. I message to JWA...
I've got this notification too. Try to uninstall and reinstall, clear cache , force stop app, change Wi-Fi to cellular data , use VPN and restart my phone still not working. I can log-in only guest account and when switch account to my main account this messege pop up again. - -"