Is your wireless client getting connected and getting an IP address? If yes, try browsing to https://instant:4343/ . How about connecting to one of the wire ports?
If the client is not getting an IP address your service provider might be limiting the number of addresses it hands out. I think mine limits me to 4. If that is the case you might need to connect and reset the unit back to default and re-configure. To reset the unit there is a reset button. Alternatively, if you have another router that can hand out DHCP you might plug your RAP into it, just to get it online, so you can change the settings back to VC assigned.
Reset Button
The reset button can be used to return the AP to factory default settings. To reset the AP:
1. Power off the AP.
2. Press and hold the reset button using a small, narrow object, such as a paperclip.
3. Power-on the AP without releasing the reset button. The power LED will flash within 5 seconds.
4. Release the reset button.
The power LED will flash again within 15 seconds indicating that the reset is completed. The AP will now continue to boot with the factory default settings