Received zaps are converted to ecash on lightning address server, your wallet can be offline when they come. Push notification is sent immediately, but ecash is claimed once you open the wallet. For sending zaps over NWC from #Minibits you need push notifications working and device online. App can be closed, will process NWC payment in the background. Just play with it with few sats.

thanks for replying! I tried zapping your note. my Primal app indicates I was successful at zapping you 21 sats, but my minibits app doesn't show the outgoing transaction...

In my experience Primal highlights the zap icon immediately and later adjusts it based on the result. You should see Minibits push notification showing the result of the nwc payment in few seconds. If not, make sure notifications are enabled and working on your device (google play services are needed if you use graphene os)

Until the ligthning address server is alive and the data not lost - it is operated on best effort basis as a part of ecash R&D. As well, the mint must keep the support for keysets used for generating of ecash and not rotate to new ones. There are push notifications available to be notified about incoming lightning address payments.

Nostr client <-> Relay <-> Minibits server <-> FCM <-> Device <-> Mint, Relay

ah yes I am using GrapheneOS