Installing AVG INternet Security which I have just renewed

AVG Protection
2

Hello Martin,
We are sorry to know that. This issue can  happen, if you have old traces of AVG installed in your computer. We suggest you to click on this link to download and run the AVG remover tool, after which you can install the AVG Internet Security renewed http://avgclick.me/UninstallAVGAV
Thank  you

3

Hello Martin,
We are sorry to know that. This issue can  happen, if you have old traces of AVG installed in your computer. We suggest you to click on this link to download and run the AVG remover tool, after which you can install the AVG Internet Security renewed http://avgclick.me/UninstallAVGAV
Thank  you

1

I am unable to install AVG Internet Security which I have just renewed because "it is incompatible with another AVG product already installed. How can I identify and remove the other product?