I do not know of wallet of satoshi supports Nostr Wallet Connect (NWC) but others do. Alby, strike, mutiny and breez are a few. You can recieve zaps into your Wallet Of Satoshi (WOS) by placing the lnaddress assigned to you when you installed the app (abcdef---wxyz@walletofsatoshi.com) into your nostr profile, but zapping without NWC means you need to copy the lightning invoice from amethyst into WOS. NWC connects amethyst directly to a lightning wallet and allows zapping to be a single-click operation. If you have trouble zapping, it could be due to two problems: Either the person youre attempting to zap doesen't have their lnaddress configured properly in their nostr profile or your WOS isn't completing the lightning payment into the recipient's wallet. This could be due to legal restrictions, or it may be a simple case of insufficient liquidity on the lightning network between the WOS servers and the recipient's wallet (this problem may be temporary).