can't connect to ReadyNAS server

I have the same problem:
"ReadyNAS Remote could not connect to the ReadyNAS server, please check your internet connection and DNS settings. If the ReadyNAS is behind an HTTP proxy, please make sure you have entered correct proxy server settings"

I'm not connected to a proxy server, the readynas ftp and http services work just fine - so it seems to me that the readynas remote add-on has a problem accessing the the remote-readynas network.

I can log in with the readynas remote program on my pc and iphone and at https://remote.readynas.com/

I have been googling the problem but found no answer, strange that this issue has not been made a priority - tech's seem to offer no advice ?
Strange when so many people have this problems and it's such a highly advertised feature...

I'm running:
NV+ RAIDiator 4.1.8
Readynas remote v1.0.9.78
router dhcp
port forwarding 6300