N300 - Limited Access Only

I just got an N300 and followed the instructions in booklet. I plugged it in to the outlet closest to my router. I used a tablet to establish the "EXT" to my current wireless network. So far, so good. I moved the N300 to an outlet closer to my PC, which is where I'm having wi-fi issues.

Then I tried to connect my PC to this "new" network that was showing MUCH better signal strength. It connects, but only with "Limited Access," that is, no internet. I ran through the troubleshooting functions on my PC, no change. I downloaded the NETGEAR Genie, which showed no internet access, it attempted to fix, could not.

Now what? The only reason I got this is for improved internet access.

Please advise.