I am on manual relay mode and have added the relays for the bridge and deactivated the payed relays. I attached a porn sample (cuttet it to not show HC :-) ) Added Error Screenshot for mastodon sample address @earthquake@social.yl.ms (this is a bot no real user) too.
wss://relay.mostr.pub (run by me)
wss://nostr.poster.place
wss://relay.shitforce.one
to make it work even only the last one works for me, the other ones are behind cloudflare. The Bridge describes itself:
On the ActivityPub side, you'll see the user's public key in mentions and URLs:
Mention: #[0]@mostr.pub
URL: https://mostr.pub/objects/e3460f9dbe3c41c7e2e26290d08b39ee997a1f1a42702f5db6385369ff6b7093
On the Nostr side, you'll see:
NIP-05: alex_at_gleasonator.com@mostr.pub
Normal pubkeys and events.
Nostr users should subscribe to our relay at wss://relay.mostr.pub. They can also locate users by searching for the NIP-05 identifier.



Try enabling automatic mode and assigning high priority to the relays you want to use. Let's see if that helps with the spam.
Regarding adding users, for now you need to know their npub or hex ID, that's why it's not working what you're trying to do.
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