"Main" Wifi Network Not Connecting on Some Devices

[NJTeacher]

As of about 2 days ago, my iPhone is giving the message "No Internet Connection" when I try to connect to my main home wifi network. This did not happen previously. I am also unable to connect a new work Macbook to this network. Both devices will connect to the "Guest" network though. I'm wondering if anyone knows why they will not connect to the "main" network and if there is any concern with using the "Guest" network as my primary network on these devices. Both the "main" and "Guest" networks are password protected.

[Cang_Household]

Does your device name or NetBIOS name include special characters, such as spacebars?

[NJTeacher]

It does include a hyphen, which is how it was set up by Verizon. I have not changed that. Both the "main" and "Guest" are the same; one simply has "-Guest" added at the end so there are two hyphens in that device name.

[Cang_Household]

Sorry for the confusion. What you are telling me are the SSIDs of the WiFi, not the device name. I am referring to the name of each wireless endpoint device, like your smartphone, labtop, and etc.

For an iPhone, you can find the device name by going to Settings -> General -> About -> Name.

Also, please give more information about your router. Is it a G3100 or a G1100?