Are you talking about the relay configured in Amber? I haven't been able to configure my Citrine relay with Amber. It always rejects with a "kind not allowed" error.
Discussion
Can Citrine set a type whitelist?
No, it blocks all kinds by default, and you have to then allow every kind you want individually.
If I knew which kinds were required for Amber to successfully add a relay, I could allow them and see if it then accepting Citrine as a connection relay.
You could try allowing 24133 kind events
Ok, I'll try that.
Ok, so that got me past the "kind not allowed" error, but now I have a, "tagged pubkey not allowed" error. Citrine blocks events from all pubkeys by default, and you add your own pubkey to its allow list to use the relay. If some other pubkey is attempting to access Citrine, it blocks it. So, this error leads me to believe that another pubkey is attempting to write to the relay during the process of adding it to Amber's relay list. I'm going to look at the logs and see if I can find it.