Hello- Gotten a Hipass from a friend (that had money on it) but just found out my car plate was getting charged (and the hipass). What’s the easiest way to pay the tolls?
Like the other commenter said, you can use basically any payment card inside the HiPass device, but the device itself has to be registered to your particular vehicle. Sounds like it might still be registered to your friend's car. Depending on the model, you can plug it into your PC via USB and use the HiPass website to deregister from friend and reregister it to your car.
Did you get a notification or message about unpaid tolls? It should give you a way to pay through that via bank transfer or etc. If you'd rather do it in person you can visit any HiPass office (unmanned kiosk at most toll gates, or actual staffed office at some bigger ones).
HiPass needs to be registered to your license plate. I guess you know that now.
Did you receive a notice for the unpaid tolls? It should have the payment info on it. Alternatively if the car number is registered to your name there should be a place to query and pay outstanding tolls in your bank app.
Failing that you can try to login to The HiPass site to query the missed tolls.