If the Mylifetime app asks for re-authentication, you must solve this issue by uninstalling the app from your streaming device. Next, you must reboot the streaming device by disconnecting it from the power supply. Now, download the Mylifetime app once again from the channel store. After that, open the app and get the activation code. Go to mylifetime.com/activate site, and choose the pay-TV provider, enter the code into the text box and start with the activation process. Repeat the same process on other devices, access the app, and make sure that you proceed with the re-authentication process.