Hey there @106775883419575 ,
I think for Instructure-hosted instances you need a CSM to enable it for you because it isn't available by default. On your self hosted version, do you see any options at the root-account level on the main settings page that may say something like 'Allow CSS for theme editor' or something? I could be wrong, but I also think self-hosted versions also provided you with your own site admin account for your instance... it would appear on your accounts page or on the admin accounts menu... I think. I'm just recalling what I remembered watching in a youtube video a long time ago.
So I'd recommend checking your general settings under both admin accounts, and seeing if there's an option listed. If not, maybe under feature options? I'm honestly not exactly sure where it would appear. It could also be possible that it is only available for Instructure-hosted instances.
Hope this helps a bit!
- Noah
