You have to log into the router. Then go to Wireless or wifi and change the router's name and password. Then save, restart the router and log out of the router. Each brand of router has a different log-in. address. They all start with 192.168. If you have the book that came wit the router it should be in there. It may be printed on the router as well. See if there is a number that starts with 192.168.on the router. If you find it, just type it into your search bar on your browser and hit enter. The password is usually admin. Let me know what brand and model router you have. If you google your router/s model number you should be able to find the manual for it. I've also found that a lot of You Tube videos are available. Just google your router's model number and look at what comes up from you-tube. You may get lucky.
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You have to log into the router. Then go to Wireless or wifi and change the router's name and password. Then save, restart the router and log out of the router. Each brand of router has a different log-in. address. They all start with 192.168. If you have the book that came wit the router it should be in there. It may be printed on the router as well. See if there is a number that starts with 192.168.on the router. If you find it, just type it into your search bar on your browser and hit enter. The password is usually admin. Let me know what brand and model router you have. If you google your router/s model number you should be able to find the manual for it. I've also found that a lot of You Tube videos are available. Just google your router's model number and look at what comes up from you-tube. You may get lucky.