About Free Antivirus Avast pop-up messages

Hello!
I have free version of antivirus Avast. I want to say that at the expense of viruses are satisfied but always pop-up messages during the game in full screen mode is not very much.
I tried everything that is possible to disable this feature but to no avail.
I want to ask the developers to consider this as really hinders the game in full screen mode.

Thank you for your understanding.

Well, you can disable the update popups, you can configure sounds/voices, and, specially, you can use Game Mode.
See Settings > Silent/Game Mode

I turn on Game Mode settings in both function and still pop up messages. These messages are about the fact that I switched to the paid version.

Can you post a screenshot of the popup?