I have ordered and installed three sizes of Cappa double rods (2 from another retailer and 1 from Wayfair), and this particular size/length combo from Wayfair  has been a pain. 

The brackets don’t screw directly to the wall - instead, you screw a small mounting plate to the wall and then slide the rod bracket down over the mounting plate. As a result, the curtain brackets move side to side when you open and close the curtains. 

The other issue I have is with the adjustment screws that hold the rods securely in the brackets. One end of the bracket has too much space between the rod and bracket, so even if the screw is as tight as it can go, it still doesn’t hold the rod securely in the bracket, and the rod can move.