Ah, I think I confused you using a web browser on your phone vs. the app on your phone. You're using the HE mobile app to access your dashboards, correct?
If you're using the HE app to access your dashboards, you don't have to enter any URLs in the app or dashboard settings...you'll get access to your dashboards locally on Wi-Fi and remotely on mobile data, both are supported. As noted above there are some issues that are being worked on...
If you have more questions about access ask them in the topic above, in a reply to Bobby, so the info is in one place.