Hi. 
Recent, I've configured a DECO M5 mesh and I've set up a main network and a guest network. Two of my devices are still connected to guest network (one smart plug and one computer with wireless adapter). 
A few days ago there was a power failure. After that, those two devices cannot connect to the network. With the computer, I've tried to connect also to the main wireless network, but still unsuccesfully. In the troubleshooting of the windows, it says that is a problem with DNS. I've tried all the solutions from the internet, but still the same. I've tried to plug in the wireless adapter to another computer but still no connection to internet. 

All other devices works just fine (phones, tablet, laptops), but none of them will work with the wireless adapter. I've also tried with another wireless adapter, but still the same. 

I guess the DECO blocks the mac addresses from those two devices, but I cannot find anything in the setup of DECO. 

Help