Hello  @DSYCampDavid 

Please confirm you could turn ON/OFF KS230  manually first, if not, examine the wiring as installation video here.  

Here is a troubleshooting guide for kasa set up concern which you could give it try: 

What should I do if I fail to configure the Kasa device?

• Confirm the correct Wi-Fi password has been given during set up process
• Make sure VPN is OFF

If still the same, can I know at which step the set-up failed and the error on the app? For set up concern,you may also try to reach out hotline service to get step-by-step guidance : 

https://www.tp-link.com/support/contact-technical-support/#Hotline-Support