Hi,
I’m assuming you are trying to create a Watched folder on Roon that’s pointing to a network share on your Apple Time Capsule.
There is information on how to do this in the Roon Knowledge Base.
Once on this site and search for “NAS Watched”.
You should then see a list of topics, have a read … esp. these:
“Adding Folders Using Path”
“FAQ: I’m having trouble setting up my NAS”
Then if you are still having problems, then get back to us, with as much detail as possible, see
Reporting An Issue.