This happened because it was trying to send the event to the old set of relays (the pubkey) plus some fallback relays that are no longer active. I have made a 2 changes to address this:

1) It backs up the new event first (with the relays you want to restore) and send updates these relays instead of the ones you wanted to replace

2) I have replaced the fallback relays with relay.nostr.band, nos.lol and relay.damus.io which I think are accepting events from any pubkeys. events also get sent to blaster.mutinywallet.com as they are profile related.