How are you trying to access the Scan menu ?
This should be the way, AvastUI > Click the ‘Scan’ tab > select ‘Scan for viruses.’
This opens the Scan section where you can select the virus scan that you want from a drop down list. Now click the blue Settings text. Here you can customise the settings for a scan, including scheduling them.
If this is how you have been trying to do it, at what point do you experience the issue/problem ?
