It's several months I am struggling with strange connection problems between my Notebook and Wifi 5ghz hosted by Archer C6. The notebook is an Asus ROG Strix GL703GM mounting an Intel Wireless-AC 9560

Since I am testing 4G data connection, I bought an Archer MR600. It is working quite fine, but I noted 2 annoying things: 1) the first one is that it seems to have an hidden wifi 2Ghz SID that I canno