HI luchuc. Well here is what I found out. I was dealing with Logitech over this issue with the solar app not working along with the Screen Saver. They had me go through a bunch of trial and error stuff and the last one was to load the three programs onto my Laptop, (Dell) using the Logitech Keyboard and mouse to see if the same problem occurred, and it didn't.
So after this happened they considered the issue resolved as it worked ok on one system but not with the HP all In one Computer. The result was that the issue had to be with HP, not with Logitech. To work on this with HP seemed to me to be a waste of time, so I don't use the Solar app at all.