Error when adding network drive (112)

Hi I’ve been running Volumio for a number of years without problems, but I’ve just changed my router and cannot get my NAS to connect.
I’m using Pi 3B with an IQAUDIO PI DAC PRO and running V 3.703

When I input my NAS details and log in to it I get the following error

Error when adding network drive (112): Host is down etc.

I can see the that the NAS drive is active on my network, and the Pi is on the same network. My web radio channels are also working ok

I’ve read through the forum and added vers=1.0 and it connected immediately