I'm a volunteer for a local charity and we are looking to setup a WiFi network within the community hall that we manage, we already have network cables (I need to check if they are Cat 5, 5E or 6)...

@Philbert Think you're right about the IP conflict, I remember reading somewhere that the default IP address could cause a conflict, the adapter would pick it up after a period of time and resolve...

I'm trying to add two TL-WPA4220 adapters to an existing powerline network. I've added both devices and paired with the existing network. I can see both of them in the tplink software on my laptop....