So the content files aren’t accessible via the Files app then? Have you done this and got it working? This line of the install instructions is why I have a copy in my synced Files section:
Copy the folder samplesite to the folder of some user (it will be shared with users)
I should note, I did leave the folder ‘samplesite’ in the folder under
apps/files_picocms and placed a copy of it in my synced files, but it still didn’t render anything when I tried it.