Magister asked some good questions. I am home if you want to do it on the phone [faster].
1/ do you see the Bridge as a selectable input on the DAC?
2/ if so then scroll to the Bridge info screen on the dac and jot down the IP address.
3/ enter the IP address into a computer on the same network anf the Bridge web page should come up.
Under "network configuration change the DHCP setting to “NO” if it is not so already.
If you can, also give a static IP to your NAS and wireless bridge [donglr not the DAC Bridge].
I would then do a cold boot of your entire network [power unplugged] and restart beginning with your router, then NAS, DAC etc.
Much better if you are hardwired ethernet to the dac but if your wireless connection is strong it should be fine. [ 5hrz works best if no walls between router and nodes].
If 1+2 are good then it is all about your network set up.