@Brac 

Hey, is your connection working as: router--CPE AP))(( CPE Client--PC? If so, try to connect devices to AP's WiFi name and make sure you can get internet connectivity.

After that, you can check if the PC obtains an IP address automatically. Technical Support has the instruction. https://www.tp-link.com/us/support/faq/14/

I think your PC will get internet right away after you change the IP setting. If still have no internet, how about this instruction? https://www.tp-link.com/us/support/faq/2575/

For the Zytel router, you can connect the Client CPE into WAN/LAN port on it.

@Brac  Went through all the instructions with nothing fixing the issue so I started over checking everything. I found I had put a CAT5 end on wrong and changed that. That got it kinda working, I had connection to both AP and C and it showed internet, though I was only getting 87-95 Kbps. I found a page that was to trouble lack of speed and started folloing those step and it went out on me. Now I can only log into the C.  

Wondering if there is anything to try? 

@Brac   After much back and forth, I now have active high speed out of the Client.  My thought was to connect the Client to the WAN line of my router and just disconnect the dsl lines but that doesn't seem to work.

Any idea how to do that, or do I need a different piece of hardware?

Thanks