How can I change Kate terminal font size etc

I used to change Kate terminal font size but I forgot how I set it earlier.

I think I’d created a new profile and set it to default but the plug-in won’t allow me to create a new profile.

Any suggestion?

Kate version: 24.02.0 from Flathub Beta as Flatpak.

Have you tried editing your profiles in Konsole?

I installed Kate via Flatpak, and installing Konsole does not affect the sandboxed apps.

Yes, I tried it. It works in a non-sandboxed installation but not in Flatpak.