@Craig_C It will not work. In general, you will not be able to reach the LAN side from the WAN side because of NATing. This router is meant to connect a local network to Internet. However you can...

@Tazbo Buy an ethernet cable tester. They are not that expensive these days. It will let you test RJ45 jacks/ports, too.

@jagr200 I'm not familiar with that router. However it is necessary that the router allows you to add routing rules mentioned in Step 2. I use an ASUS router with the ASUSWRT-Merlin firmware and...

@jagr200 It may be too late, but you make like to take a look at this FAQ. How to build up a multi-nets network via Multi-Nets NAT feature on TP-Link router with L2+/L3 switches? It deals with almost...

@AndreMartins Have you seen this datasheet? https://static.tp-link.com/upload/product-overview/2021/202107/20210730/EAP%20Datasheet.pdf

@graham-b I would not recommend your solution to anybody. It is not correct and I do not think it works the way you want. Here’s what most likely happened. You wrote “All devices on same subnet (inc...