Help: OnlyKey Version 5.2.0 not working on Ubuntu 22.04.3

[djf]

I recently made a fresh install of Ubuntu 22.04.3 LTS on a new laptop, and I then tried to install the OnlyKey program (Version 5.2.0) using the Ubuntu Software Center. The program is listed as onlykey-app there. I clicked install and the program installs, but then when I try to click and open the program nothing happens. No OnlyKey program window appears. Why is this happening, and Is this the correct way to be trying to install the OnlyKey program? And if not, How do I install this program? I don’t know if this matters, but after installing this program there is a button on the Ubuntu Software Center called Permissions. I wasn’t sure if that matters, and if I needed to make any particular set of selections in there to get the program to work.