Relays sometimes go down temporarily. That’s ok. However, if you notice some relays are consistently down, might as well remove them

Yes, you need a lightning wallet that has an @ address that looks like an email address.

Wallet of Satoshi is the easiest solution for receiving zaps via this method. Just be sure to withdraw your BTC regularly as WoS is custodial.

Breez is my favorite LN wallet for sending zaps, which is self custodial.

Screenshot of an email-style lightning address from Wallet of Satoshi for reference

3. To talk about #nostr

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Welcome to nostr! Feel free to drop an intro using the #introductions hashtag. Tell us a little about yourself and what brings you here! 😁