The ui-card is not choosable in Version 2024.3.3

[tardar]

Hey,

i'm new to HomeAssistant and like to use the betterThermostat with the ui card :)
First - great work, thanks alot.

I got unfortunately one issue - i can't select the ui-card if i create an vertical stack card and like to add it there.
I installed the repo with HACS but the card is not choosable :(

Would be nice aif someone can check and fix, if possible and no error-40 :D

Thanks alot
Tardar