You will need to change the Wi-Fi settings on all your devices if you give a different Wi-Fi name or password when setting up your Roqos Core. In order to avoid this hassle, we suggest that you give the same existing Wi-Fi name and password to Roqos Core, and then turn off the Wi-Fi on your existing router. If disabling Wi-Fi is not an option given the circumstances, you should change the Wi-Fi name and password on your old router to avoid conflicts when devices join your network.