What actually happens when you try to log into to change the wifi?
What are the 2.4ghz/5ghz wifi leds on the router doing?
did the wifi on/off button get hit? Push and hold the wifi on/off button for 2 seconds.
You description leaves a bit to be desired. Its hard to understand what you've actually tried, whats going on, and doesn't have much details at all. The more you tell us and the better the description, the more we can help.
