I'm sorry about the issue. What is the model of your Internet/wireless modem/router device?
What's the model of the device you are having issue with?
What happens when you connect the device to your regular wireless network name (not the guest name)?
Do you have a laptop/wireless computer that is currently able to connected via wireless? If so, does it have Windows xp, vista, or 7, 8, or Mac?
Please reply at the box below. Thank you.