I tried last week actually to connect using my phone and says Safari could not open the page because the server stopped responding.
Viewing post in My Heresphere can’t connect to Quest 3—via SMB or XBVR.
If you can't load it in your phone's web browser, then the issue stems from your Mac/router/xbvr. You can try asking for help on the xbvr discord: https://discord.gg/wdCHXAG. Maybe some recent MacOS updates are preventing xbvr from communicating properly over your network.