License number does not fit serial number of AVG Driver Updater

Hello Boguslaw,
Thank you for contacting AVG Community support.
We will surely help you to resolve the issue.
Before we proceed, please let us know if you are able to access internet in other devices.
If you are able to access the internet on other devices, please share us the screenshot of the activation error message using this article (https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=screenshot&supportType=home) to assist you with better clarity.
Thank you.

After paying a bill for extention of license for AVG Driver Updater I got a letter with activation code 
BUT also a message: "to press the button below".  I did it and I tried to use this activation code
which I just got.  Then the message appeared that the activation code does not fit to  the license number. 
   I suppose that pressing the button I downloaded AVG Driver Updater with new license number.
I do not know how to solve this problem because now after each trial to write the
activation code I obtain the message that the activation code does not fit to the license number 
and proposal to check whether my internet connection works well.
 
Hello Boguslaw,
Thank you for contacting AVG Community support.
We will surely help you to resolve the issue.
Before we proceed, please let us know if you are able to access internet in other devices.
If you are able to access the internet on other devices, please share us the screenshot of the activation error message using this article (https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=screenshot&supportType=home) to assist you with better clarity.
Thank you.