ISP cox
Router: dlink dlr 865L
Every device (two laptops, four iPhones, one desktop) can connect to the router. They all show a good signal strength. But there's no Internet. They all connect to the router but the Internet just isn't working. I've looked everywhere for a solution but the vast majority of solutions are for one device not being able to connect while others can. I've only tried restarting the router.
This problem started a few months after we got connected to the Internet. When it started it was maybe once every two weeks. Now its four times a week at least. It eventually fixes itself after several hours but then it just happens again.