If I try to use the official Hubitat app on my Pixel Fold running Android 15 (but this happened on prior versions as well), I am unable to connect to my Hubitat even if I'm on my local network. The hub is discovered but when I click "Connect to Hub" it attempts to connect but eventually shows that the page cannot be loaded. If I'm off the network and I go to "Remote Admin" I'm taken to a screen that says "Remote Admin is active on this account" but it can't find the hub and I can't seem to find anyway to connect to the hub.
If I'm on the browser locally on my network and I go to https://findmyhub.hubitat.com/ it finds my hub with the local IP address and I'm able to connect to it successfully.
Is there a port I need to open on my OPNsense firewall to allow the Hubitat to connect remotely? I notice that while the Hubitat starts up it says something about enable "UPNP services" or something along those lines, but I don't have UPNP enabled on my firewall for security reasons. Is that absolutely necessary?