I just bought the AC7 router, the AC1750. I connected it to a power source and I connected the ethernet cable to the internet outlet. I also connected the router to my computer and the internet is working. But I can't get the wireless wifi to start. I tried opening the IP address on the search engine and it brought me to a site that says 'dd-wrt.com' with details about the router. I can see it says wireless network 'disabled' but whenever I try to open any sort of settings it asks for user and password login information. I tried the default 'admin' and 'admin', as well as SSID information but nothing is working. I don't know what to do now. Please help!