HELP - cannot configure Minimserver

[Nayags1]

Any help is much appreciated!
I have just converted my QNAP NAS from RAID to JBOD. All data has been reinstalled without problems. I am able to get Linn Kazoo (the Windows App I use to browse my music to direct to my Linn Streamer) to see and recognise the QNAP streaming app. However although I installed MinimServer manually without problem (although it did flash briefly during the installation - "minimserver error could not create a shared folder") and it did create a launch icon on the QNAP control page. Everytime I click on this icon and try to launch it, it fails to connect to the :9790 port.
These are the measures I have tried to no avail:
1. disabled the Firewall (Eset Antivirus)
2. Made sure "Use a proxy Server" is off in Windows 10
3. Switching everything off and on again in the sequence recommended on the website

Can anyone give me some suggestions as to what I may have missed? Thanks is advance!
PS Minimserver was working fine when the setup was previously used as a RAID configuration.