I've recently duplicated another site of mine and was clearing all the collections from the duplicate.
I cleared out all the Body sections of each template, and removed all bindings and products. I could delete all collections except two - "Products" and "Experiences".
The reason why is because both of those products had linking to their Image field for the template page settings under "Open Graph Image URL" which referenced their Image field.
I've changed this back to "Select image for open graph results..." but it still won't let me delete the collection!
The reason I know this is because that's the only field I can't seem to delete from that collection too.
Help please! Here is my preview link https://preview.webflow.com/preview/smith-sinclair-popup?preview=bedd3f1aa84f5c311ce85e87f206562c