@Frick156 All of my HS105's are still operating fine. However, I do recall when I installed the last 4 switches, there was a moment where the App asked me if I wanted to upgrade the firmware and I...

So the problem is IOS 14.2. I used my iPad which is on IOS 13.x and I was able to register and link the 4 new HS105s to my network...... so that solved the problem for me.

I did a search on "IOS 14.2" and found this post: KP400 IPS 14.X / New Router couldn't add until I used another iPhone with IOS 12.4.9 2 weeks ago Model: KP400 Hardware Version: V2 Firmware Version:...

@PNWNDR25 I'm new to all this. I bought 2 HS105's from Best Buy 2 weeks ago (12/1/20) and after a few attempts (due to my unfamiliarity) managed to connect them to my home wifi. I travel so I'm happy...