nostr:npub1wf4pufsucer5va8g9p0rj5dnhvfeh6d8w0g6eayaep5dhps6rsgs43dgh9 is there an explanation somewhere about what https://zap.store/ does exactly? I've installed and it works super well, but it's not clear how it is using Nostr at all.

(Also my NIP-05 didn't work.)