Why is a WiFi connection required?

I am trying to use my Tidbyt with my iPad, which has cellular internet connectivity. But it only works if I create a mobile hotspot on my phone and connect my iPad to that. Which means that as soon as my phone goes out of range the connection is lost. (My office does not have WiFi.)

@coyote We built Tidbyt to work without a phone nearby. While you use your phone to set it up at first, after that it’s meant to fetch all data over Wi-Fi (kind of like Alexa or Google Home).

So is there a way to change the WiFi network it’s linked to? Or would I need to go through the install process again?