Installing product on second or third PC

Hello Cyril,
We apologize for the inconvenience caused.
We understand how something like this will try your patience.
May I know the exact error message you have received?
Are you using sales number or license number to activate your AVG product?
It is not safe to share the license number information in this community forum. We recommend you to contact our chat support using the below steps.
Check out this link https://support.avg.com/support_win?l=en_US and select your product. Choose technical support and fill in the details to chat with us.
Thank you.

How do you install  AVG antivirus for 3 PCs on a second computer? it won't let me use the registration number I got with the product, that I used on the 1st computer?

Hello Cyril,
We apologize for the inconvenience caused.
We understand how something like this will try your patience.
May I know the exact error message you have received?
Are you using sales number or license number to activate your AVG product?
It is not safe to share the license number information in this community forum. We recommend you to contact our chat support using the below steps.
Check out this link https://support.avg.com/support_win?l=en_US and select your product. Choose technical support and fill in the details to chat with us.
Thank you.