> The blowater app is able to retrieve our Nostr Relay configured in our metadata
Not yet, currently I hand coded some relays into the code.

> by default it's using blowater Nostr Relays
Yes, by default it only connects to wss://blowater.nostr1.com

Blowater is never designed to be a social media client and never will. It's a Discord style client for communities & organizations. Therefore, relays play very different roles comparing to mainstream nostr clients.