KDE not pairing with Ubuntu 20.04 machine

I installed the KDE Connect app on my Galaxy J7 cell running system 7.1.1. I also installed gsconnectandyholmes.github.io.v43.shell-extension.zip file on my Ubuntu 20.04 machine. But they won't pair. My phone recognizes my computer, but it won't pair when I tap on my computer's listing under "Available Devices." Each time I attempt to pair them, I get "Timed Out" notification.

I then tried the method found at https://www.makeuseof.com/tag/kde-co...android-linux/
specifically entering these commands in a terminal:

sudo add-apt-repository ppa:vikoadi/ppa
sudo apt update
sudo apt install kdeconnect

Still no success. Can anyone recommend a fix?

Thanks,
Scott