WiFi Problems with MacBook Pro

My somewhat dated MacBook Pro is still serving me faithfully but I've had problems with getting it to connect with WiFi repeaters. 

I have a TP-LINK TL-WA855RE N300 Wi-Fi Wall Plug Range Extender/Repeater/Access Point and was having no end of trouble getting my MacBook Pro to maintain a WiFi connection to it. It would connect but soon an IP conflict message would appear and the connection would be broken. Having become so reliant on WiFi, I'd forgotten that this repeater has an Ethernet port. 

When I remembered, I then used a wired connection. My MacBook was assigned an IP address and that was the end of my problems. I need the repeater in my study, which is a little out of range of the TP-Link router, and so the lack of mobility is not a problem. I can simply turn the WiFi back on when I'm elsewhere in the house. 

The problem only occurred with the MacBook. My Samsung smartphone experienced no such problems. So the WiFi connectivity problem was never resolved but an alternative connectivity solution came to the rescue. Whether this same problem occurs with the latest MacBooks I don't know. 

Of course I don't have a dedicated Ethernet port on my MacBook Pro and so I needed to use a dongle, which fortunately I already had in my possession. With that and an Ethernet cable, I've had no further problems. It's just a reminder that, even in the world of technology, everything old can be new again. Once upon a time, there was no WiFi and Internet connectivity, when there was an Internet to connect to, was achieved via cables. Now, in my study, I'm living in the past.