How is a tool useful if it doesn't do what you ask of it? Such as after a scan it saying "you have not done a file system scan yet" and if you hit "scan files now" it launches the wifi security check.
This is coming from a paid user who did see ads for a week while avast sorted out the subscription snafu, which some paid users are still experiencing. I'm glad my subscription got fixed, but, you must admit, the current state of avast's mobile app is flawed at best.