Thank you - so now that SN is self custody, I never have to withdraw it goes straight to connected wallet, and just need to refill manually to make sure I have enough to zap each day, correct? My balance here in SN only goes down.
Your balance on SN is used for posts and comments or if your wallet can't pay. It increases when somebody zaps you CCs (because they don't have a wallet or any other reason mentioned here).
The minus is confusing because a p2p zap is like a withdrawal for the receiver, but it actually means you received 21 sats in your attached wallet