Device isolation on mesh

[Boulin99]

I have a product called a wiim amp on my mesh.  When I try to use with the proprietary app, I'm informed the device is on a different network.

I've been advised to try and change settings regarding device isolation and make sure they are turned off.

I need direction how to accomplish this on Google mesh.

Next see if you can find any mention of IGMP or 

[David_K]

Client/AP/device isolation is turned off by default on Google Wifi and Nest Wifi. In fact there is no setting to turn it on.