Hello Patarapong,
I am sorry to hear that. It seems you have installed a different version of AVG PC Tuneup which cannot be activated with the license. I request you to uninstall it from the control panel -program list and then follow the steps in this article http://support.avg.com/SupportArticleView?urlname=How-to-download-and-install-AVG-PC-TuneUp to install AVG PC Tuneup correct version with your license.
If you face any difficulties, please contact us.
When I installing program finish, It show “ AVG PC TuneUp cannot be installed” and information supported “ You already have another AVG product on your computer that is incompatible with the incompatible with the one you are trying to install” and last paragraph “For more information, contract Customer Support for help.” after it is can't register
so, how I will do it.
Hello Patarapong,
I am sorry to hear that. It seems you have installed a different version of AVG PC Tuneup which cannot be activated with the license. I request you to uninstall it from the control panel -program list and then follow the steps in this article http://support.avg.com/SupportArticleView?urlname=How-to-download-and-install-AVG-PC-TuneUp to install AVG PC Tuneup correct version with your license.
If you face any difficulties, please contact us.