Setting it to Access Point mode looks to have worked. I'll test over the next few days. Thanks for the amazing support so far, very much appreciated!

@Joseph-TP Hi there, So the MacMini is connected to the router via the 5Ghz wifi connection. The same one that the Deco is using. The MacBooks can see the MacMini when on the 2.4Ghz wifi connection,...

@Joseph-TP Thanks for the response! Diagram as below, hope this helps...!

I have recently added 2x X10 hubs to my wifi network and am now not able to access a network server via wifi. The original setup was a router, with a MacMini plugged directly in. This was accessible...