I've been working with workflows and deliveries for months. Today when I openen my Campaign were all my delivery folder empty.
When I create a new delivery it appears on my colleagues computer but not on mine. So I can't see the delivery templates in explorer view. Why?
I've tried the filter button to the right and reinstalled the whole program. Nothing helps. I've also checked that my colleague and I have the same security properties marked.
I solved it by uninstall Adobe Campagin and delete some files that AC left in a folder.
Then i installed the program again. So it is working now.
It is hard to say without access to your environment. Are you already in production with Adobe Campaign? If so, can you reach out to technical support?