fsx76

I have MSFS 2020 and I have been using the Logitech Radio Panels for a couple of years. A couple of days ago, there was a a simulator update, and after I updated the sim, the radio panels no longer worked. No lights - dead. The radio panel in the sim works fine. I uninstalled the plug in, I installed the latest plug-in, I pulled the USB out, re-started everything. Plugged in the USB and nothing. I have tried different airplanes. I moved the USB to a different port on the back of my computer, nothing. I uninstalled the plug in, re-downloaded the latest plug in, connected the Radio Panel USB, started up the sim.... dead. I saw some recommendations for using a paid program to get it to work and also FSUIPC or something but I am not a computer per

I have Flight Simulator 2020. I downloaded the Learjet 35A from the Market Place. When I start dark and cold, I cannot get the transponder to turn on. The batteries and avionics switches are on, both in the sim and on my Honeycomb Yoke. When I start the flight from the runway, the transponder is on and working. I have looked through the cockpit and made sure every switch is turned on but no transponder from dark and cold.