Hi, I am not sure if there is a language barrier here or not, but you seem to be focused solely on your router as the source of your problem. However, since it appears that your router and NAS are, in fact, functioning to some degree, the next most likely source of your problem is either your WD TV unit or whatever the connection from the WD TV to your network/ router. The very knowledgeable moderator has already suggested checking your connection, and if ethernet, try a different cable, if wifi, check the network settings in your WD unit to see they are correct. If simply UNPLUGGING the power to your WD and turning it back on, do nothing, you might try going into the WD's settings and doing a factory reset, and re-enter all your network settings. Again, I have several versions of the WD device, they are buggy at times and especially sensitive to heat related issues. Good luck and try to remember it is hard to communicate and troubleshoot a problem if you don't clearly list the steps you have taken.