Custom:grid-layout error on Shelly X2 Wall Display

Configuration Frontend
1

I have set up a layout for my Shelly X2 Wall Displays with layout-card and a grid-layout. It works perfectly on my pc, and on my smartphone.

But on my Shelly X2 Wall Display I get the message "Custom element doesn´t exist: grid-layout.

Anyone ever had this problem?

20250409_124858
20250409_1248581920×1440 153 KB

2

To start, I’d clear the device’s browser cache.

3

Is it some kind of android device with own browser? Or is is supposed to be used for cast?