I have M5 5-node mesh network in AP mode behind a Plusnet Hub One router. This router is awful, and I am trying to lighten the load on its dhcp server by setting some devices to static ip addresses - that is, defining them on the devices themselves, NOT by reserving the address on the router. I am assigning addresses outside the dhcp range.

They connect to the mesh fine (much faster!) and work fine in every way, but they do not display in the app properly, they show as online and it says which deco they are connected to, but their IP address is blank. This is happening on some ESP8266 devices, and also on my TV which is connected by ethernet cable to one of the satellite decos. I have only just started this exercise so I cannot tell if this is a new problem in the latest firmware which I put on a few days ago or if it is unrelated to that.