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First he has to install it, then register it and use it for a time, so it will take a little time before it is credited. As an avast user I can’t say how long that will be.

The recommendation is for the free version, that is what they would be downloading from the link you gave him.

When you have built up enough recommendations/points then you would be eligible for a free licence for avast Internet Security.

Note these points, etc are still in beta.