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YOu can certainly replace the FREE version of AVG with a PAID version of AVG.
But if you no longer have the SERIAL number or License number for the paid AVG you purchased, then you will have to REpurchase it again.
The license number is ***** the KEY to the LOCK.....if you dont have the key.....you have to buy a NEW lock.
So, you have to REbuy AVG again, to get another license number, because you LOST your original license number.
Wilson, I can connect to your computer and do what is called a Remote Session.
To help you get the AVG PAID verison installed properly on your computer......if you like?
You still there Wilson?