Thank you for the response.
router: Ubiquity Edgerouter X
switch: HP Procurve 1810 G24
Wireless (for remote): Ubiqity
topology: star based from switch
Roon Server: Asus laptop, i7, 4gb Ram, 500gb SSD, Win10
Remote: Ipad mini (latest version)
Library: Synology DS716+II, 2gb Ram, 2 disks 3TB in raid (WD30EFRX-68EUZN0)
I have rebooted all elements above, but the remote can see the server (‘MOBILEARIE’) but not the core database.
I did a backup restore last night, took about 5 hours, but the folder shown in the image (MOBILEARIE > Music) is still empty
On the Server (Asus) no firewalls, not antivirus, only Malwarebytes, but that never caused any problem when it was working well for the last 6 months, although I always thought this set-up to be slow: response time for any action from the remote was about 3-4 seconds.