I’m an absolute newbie to NextCloud, and also extremely old, and seek the help of this wise forum.
I have an Asustor AS-302T NAS server and a Linux desktop.
The Asustor has a NextCloud app in it’s downloadable repository.
So, here’s the question:
Do I install the app on the Asustor server and access it remotely, or do I install NextCloud on the desktop and use that to access the server, or both?
You have the Nextcloud server (which can be an app on your NAS), on the server you don’t need to run a NC client. On your Linux desktop you can either use Nextcloud as webdav network storage directly or use the sync client to sync a local folder with NC.