Miniserver V2 Username not reachable

[ttjrm1]

Thank you for creating this fantastic software. I have taken the decision to replace my original 8-zone music server and install MusicServer4Home. I have completed the installation and I have reached the part of configuring the miniserver connection. I have a V2 miniserver, but MS4H will not allow https to be used due to music server gateway. I have created a new user on the miniserver with full access (same as I did for Home Assistant), but when I enter the same details into the MS4H, the interface states username not reachable. The dashboard states that the miniserver is reachable with 0% packet loss.

I will be very grateful for any assistance you can kindly give with this issue.

[ttjrm1]

Adding additional information:

Hardware - Original Loxone music server
Zones - None set at present
MS4H version - 1.5.5.17
Loxone Config version - 15.5.3.4

Appears connection via IP address and https give cretificate error as setup for dns loxone address

Many thanks in advance