N300 Extender (Model EX2700) Set Up Complete - Connection Unavailable

Hello all! I have successfully connected the range extender by following the instructions given in the manual. Everything looks good, all lights are green, however, I can't seem to actually connect to the Internet. My devices connect easily to the network, but it always says that "Internet may be unavailable" and I have no actual connection. Am I missing something? Thanks in advance!