I uninstalled the application. I disconnected the router to the TP-Link ID account, then added the router to the cloud account, launched the application, added the router to the active HomeShield PRO...

@Kevin_Z I have version 3.8.6. Unfortunately, internet protection still cannot be turned on.

After changing the subscription period from monthly to annual subscription, the Internet protection, anti-intrusion protection and IoT protection functions stopped working. Information on the current...

Please don't close the topic. I also have this problem. The problem occurs on every smartphone or tablet. I cannot edit or delete one of the profiles. Reinstalling the application does not help.