Can't delete ‘midifile for orac’ folder

Here is my problem :
I wanted to install midifile for orac, a beepboop’s patch (midifile player for Orac 2.0 | Patchstorage).
I loaded it into the patch folder and installed it from the organelle. But the folder is empty (by the way I can’t access it from organelle.home, it says there’s an error). Now I can’t move it or delete it.
I saw on VNC that permission is denied.

Is there a way to force delete or change permission’s settings, or any other solution to clean the place (I’m not familiar with pd but i’m motivated to learn) ?