Two Questions

Windows 7
AVG AntiVirus Free 26.3.10886a (build 26.3.10886.979)

I set [General > Notifications > Pop-up notifications treatment > Silent mode]. When I manually request the scan of a file, I still get a completion popup. How can I stop this?

I have AVG AntiVirus running in the background. My scheduling setting for Smart Scan is to run it only manually. Why then does it occasionally run automatically?