Lifetime Maps Edition- Via 1500

ranapier2 Registered Users Posts: 1
New Traveler
My Sister gave me her TomTom VIA 1500 and told me I might want to get updates. Okay, I signed on at the TomTom sight via My Drive Connect. Sister not sure which internet provider/user name she used, I created an account under my present internet provider/user name, and used the same password she used. The account was formed and the software and now connected device looked for updates. It downloaded updates on voices and traffic but showed my map updates subscription had expired. The box and all books which came with the device shows Lifetime Traffic & Maps Edition. Why can't I get my map updated? Please help!