Surf on over to the App Store to download the latest update of TMNT: Mutant Madness. This update contains fixes for losing progress & issues connecting to a Kongregate account.
Once you have downloaded the update and launched the game, you should be able to tap the login button and login to your Kongregate account successfully.
Linking to Kongregate allows you to save your progress and restore it whenever needed, such as after a fresh install or when getting a new device. To learn more about saving, transferring, or restoring your account; click here.
If you run into additional issues or need one-on-one troubleshooting help, contact us and we'll get back to you as soon as we can.