Unless you’ve changed your VPN setup since this thread, remote access will not work with the VPN established. After dropping the VPN, you will need to disable, then re-enable remote access (Settings → Remote Access).
Regarding adding music, or other media, to the server, check the configuration in Settings → Library. The tasks to generate thumbnails, analyze audio tracks, etc are CPU intensive and may take a long time to complete. Consider scheduling the tasks to run “as a scheduled task.” They will then run during the maintenance window (Settings → Scheduled Tasks) and be less likely to slow down the system when you are trying to stream media.
