Seems incredibly frustrating to me - trying to manage linked kids cards. One lost his card and another started using the bus yesterday. So two new cards. Topped them up two days ago but still shows as 'pending transactions' and zero balance.
Try to transfer the balance of the lost card to the new card? Won't work online. Half an hour on the phone yesterday (so that's personally cost me about $75 in lost billable time) and still can't get that done.
Countless millions of Auckland ratepayer money has gone into this turkey and it's still utterly hopeless.