Hi,
I have 3 questions-

1. I installed Avira Antivir from the repo but when I click on program in app launcher nothing happens. How do I fix this?

2. I can't seem to shut down fully i.e. the PSU fan still runs and a splash screen still shows. How do I fix this?

3. I added a second app launcher from widget menu, removed it and now when I search on app launcher I get a double entry for each app. How do I fix this?

Many thanks and regards.