Desktop clients won't connect to server

I’ve downloaded and installed the desktop client for both my daughter’s Windows Surface as well as my Macbook Air. Both seemed to install find, but no matter what I do, they won’t connect to the server (even though the iOS apps are connected just fine - and I can log in via the web portal). I’ve tried both the localhost and the IP address of my local server (which is what the successfully connected iOS apps are using) and on both the Windows and Mac it says it’s an invalid server. Is this a setting I need to change on the Admin side of things to allow a desktop client to connect, or is there some other issue going on?

  • Version of Rocket.Chat Server: Raspberry Pi 4 (server version 1.3.2)
  • Operating System: Windows 11 & Mac OS 12.6.3