@add1n1 You can set your ISP's DNS server on WAN interface

You can create a new SSID with no password authentication. Verify if it is an authentication issue. Trying to reboot the wifi connection of your client devices.

If you want to roam between three EAPs without needing to reauthenticate, why don't you put all EAPs in the same WLAN group? If they are in the same group, they don't need to reauthenticate, I think....

@BethH Hi Beth! I think this is a typical point to point application. Is there any power outlet on your farm? If yes, you can buy two CPE210 to build point to point long distance connection. One CPE...

@chidipothu Try plugging your wireless router to another port of TL-R470T+, but not port 2. And change the LAN IP of TL-R470T+ to 192.168.1.1. Two TP-Link routers have the same LAN IP as 192.168.0.1,...

@donmartino77 What's the model and firmware version of your switch? I saw @Fae provided beta firmware for some switches in this link: https://community.tp-link.com/en/business/forum/topic/265390