Connection minimserver - UPnP control point unstable - issue NAS/Minimserver?

[mjolink]

I did some testing tonight. Also found an extra document describing how to Configure Port Forwarding (see https://support.zen.co.uk/kb/Knowledgeba...rwarding).
I don't exactly know what the problem is - but get the idea that forwarding port 9790 of minimserver on my NAS in my router could be the solution?!

I did the following, unfortunately without succes:
added minimserver and forward port 9790 (based on description on website mentioned above)


and then linked the minimserver to device NASMJ


My control point still can't find automatically minimserver. Only after a rescan of minimserver connection is restored. Are there other devices on 9790 causing my control point not finding minimserver? Should I link minimserver to my Ipad? Should a reschedule to another port then 9790?