We have a problem with adding a card (own developed) to the Wallet. There should be a push-token, but seems it doesn't appear, so we can't send a push-notification to the card, thus we need a consultancy\some troubleshooting here. We don't use a specific custom code, just trying to understand the technology.
So if somebody has already worked with development and adding cards to Wallet - please give us a hand here. We also may discuss possibility to participate in development and further collaboration.