Code for free 3 months of AVG Tune Up not working

Hello Sir/Madam, 
You've reached the AVG community support forum.
We understand that you are facing issues with activating AVG TuneUp subscription. 
We will certainly look into this and help you. As it is not recommended to discuss your order/subscription details over this public post. Hence, we've sent you an email to your registered email address. Please check for the email and revert to us.
Thank you for your understanding.

Received an activation code for 3 free months of AVG Tune Up. Keep getting message that code is invalid - copied and pasted it from the email from AVG. Not sure what to do next. Thanks.

Hello Sir/Madam, 
You've reached the AVG community support forum.
We understand that you are facing issues with activating AVG TuneUp subscription. 
We will certainly look into this and help you. As it is not recommended to discuss your order/subscription details over this public post. Hence, we've sent you an email to your registered email address. Please check for the email and revert to us.
Thank you for your understanding.