If it is asking for the Guest password ***** you are connecting to the wrong network name. The guest account will have a different network SSID. What do you see listed as far as WiFi Networks to connect to.
Normally a Guest WiFi network has a different name. So the WiFi network you are connecting to is called YellowLion? Can you connect to that network ok with other devices or computers?
Yes that is exactly what I meant you are connecting to the wrong network you need to connect to YellowLion not YellowLion-guest
Are you connecting to YellowLion-guest or YellowLion?
when you do this you will see two networks one called YellowLion-guest and one called YellowLion...
DO NOT USE the GUEST network that is what I am trying to tell you. Whoever told you to do that is WRONG!
We can access your router if I can connect by remote to your computer that can connect to it.