https://at.govt.nz/bus-train-ferry/at-hop-card/top-up-at-hop-card
How to top up an AT HOP card
You must top up your HOP card before travel on public transport. Top up online if card is registered or in person at a retailer or a customer service centre.
how to top upat hop card
https://at.govt.nz/bus-train-ferry/at-hop-card/help-or-problems-with-your-at-hop-card
Help or problems with your AT HOP card
Find out how to get in touch with AT if you have trouble using your AT HOP card or you no longer need it.
at hop cardwith yourhelpproblems