Gramofon alternatives

Hi - I used 3 Gramofon units between my wi-fi attached NAS (music storage) and my ‘conventional’ audio systems and speakers. I used AllPlay jukebox on my phone as the controller.
Since upgrading my broadband router, my wi-fi no longer ‘sees’ my Gramofon units (I believe it is a security feature of the new wi-fi)
Does anyone have any suggested intermediary devices to connect my audio systems to my NAS and thus enable me to go down the Roon route of controlling my music?
Many thanks,

Did you upgrade your router to a Mesh system?