Avast Pro Installed but not active

I uninstalled a recent upgrade to Win10, reverting back to Win7. In the process, my Avast Pro utility has gone offline if you will. The program remained untouched, everything seems to be intact but if I double click any of the program icons it tells me that it’s “side-by-side configuration is incorrect”. Is there a way to correct this or do I need to reinstall the program? I looked on my account to see if there was any ability to download the program but nothing could be found.

Thanks

Try repair…

Controlpanel > Ad / remove programs > avast > uninstall / change > repair option

Unfortunately with the Win7 Reinstall it no longer shows up as an installed program in the control panel.

Then i guess reinstall is only option