On the fridge, use the built in browser app
Enter your Hubitat's IP, then from Apps
Find Hubitat Dashboard then click on the name of your dashboard
Then click the "Local LAN Link to Dashboard".
Once displayed set it to favorites and put on Fridge home screen
Settings I used:
5 Columns
8 Rows
Font Size 8
Icon Size 31
Grid Gap 2
Rounded 1
Column Width 103
Column Height 103
Custom CSS:
.tile{text-shadow:none}
I actually have more CSS, but it's for the Custom Presence Tiles I created.