What iris messenger are you talking about? I think there is a mobile app and there is https://iris.to which is a Snort instance.
Discussion
Yes Iris and Snort merged. Iris.to in web browser

Follows of my follows of my follows is the default? So with Iris I never see new users until somebody follows them? That is awesome! Snort was my main client in the past but it turned unreliable so I had switched to NoStrudel. Guess I'll give it another try. Thank you!
nostr:npub16zsllwrkrwt5emz2805vhjewj6nsjrw0ge0latyrn2jv5gxf5k0q5l92l7 nostr:npub1j60x528w2g2vkq5kae5uhh8y7sezjyj20zcsg0v9muc72cmdpu0s0md7ua maybe this helps for the safety minded user and use case
Navigating to that URL does not work in a bad way. I have to clear cache and login ... Something I have to do every other minute with Snort. I think that was the reason why I had abandoned it.
My settings have no "Social Network" and look quite different than what you shared:

It looks like a completely different app.
Which URL?
Are you on iris.to?
Try old.iris.to
If that doesnt work ask nostr:npub1g53mukxnjkcmr94fhryzkqutdz2ukq4ks0gvy5af25rgmwsl4ngq43drvk and nostr:npub1v0lxxxxutpvrelsksy8cdhgfux9l6a42hsj2qzquu2zk7vc9qnkszrqj49
I had that problem with primal web