Thanks, the Operation Mode was the issue. I thought I had switched it to Wireless, but I must have made a mistake somehow because it wasn't (I might not have rebooted it). If anyone is in the same...

Region : France Model : Archer C7 Hardware Version : Not Clear Firmware Version : Archer_D7_V1_150514 ISP : Orange (Optic Fiber) Hi, Sorry that the "Model Number" is wrong, but there's no "Archer D7"...