I have a Deco XE75 mesh with 6 nodes including the master. Everything good until I noticed that one PC was always conencting to a node furtehr away than the one on the same desk.So, I used teh function to force it to connect to the node on the desk,. After that, the pc cannot connect at all. All the other devices in the building are OK. If I enable the guest wifi on the Deco system, the PC connects to that OK, and also to a secondary modem/router. I have tried to find where the force connect to a particular node migh be stored o the mesh, but cannot see it anywhere. Obviously, I've rebooted stuff. 

Any ideas?

Thanks very much