I have a TM4520 with lifetime maps.

FLHTK

After logging in to Tom Tom it does not recognize my device.
Tried resetting the device but didn't help.

VikramK

Hi @FLHTK

Welcome to the community!
Have you installed the latest version of MyDrive Connect on your devices? Also, are you using the TomTom supplied USB cable to connect the device?

See this article for with connection troubleshooting -https://help.tomtom.com/hc/en-us/articles/360013900240
Regards, Vikram