My fiber internet provider furnished the Fritz!Box 7530 and I purchased three TP-Link RE550 to extend wifi throughout my rambly old house. I can't get the two to work together to form the mesh network. All three RE550s insist on connecting directly to the Fritz!Box and there is no mesh function (user picks to access the internet either directly to the Fritz!Box or directly to one of the RE550s. Is there a solution??? Connecting a separate LAN Router to the Fritz!Box and turning it into a modem only, maybe??? Help appreciated!