I do kit recommend BTCPayserver on umbrel, I wasted so much time trying tinderbox to work, and not even worth it if you do….

1) if you are serious about payments you shouldn’t be doing it out of your house, power outage, internet issue..

2) Anyone that uses it can see your IP address unless you VPN (additional cost)

3) You can host your own node for $9 a month at BTCPay Recommended LunarNode, that what I do

4) If you just want a test bed, try it out on a stable node, get a nostr.build acct that has the btcNode access