Not able to open cloud template for category page with composer

Hi,
I was using a predefined cloud template for category pages which was working fine. Since some days ago, I’m not able to open it with composer anymore, it stays just loading… (see screenshot)

I deactivated all plugins, but still the same problem. I was trying to do a workaround duplicating the template, and this problem disappeared, BUT I have no clue how to assign the type of pages I want the template to use. As you can see in this screenshot, the first one, which is the one that doesn’t work it says “Used on: All categories”, and the other one it’s empty. I want the other one to do the same, so I can fix this error.

Any idea?

Thanks in advance.

María