Cannot install avg internet security,

Just downloaded avg internet security. Tried to install but informed incompatable with another avg product but did not say which one 

Hello Keith,
We regret for the inconvenience caused. We can understand that you are facing issue in installing your AVG Internet Security showing "incompatible with another avg product ". Since you have already installed AVG Tune Up - Unlimited, you are facing this issue, we suggest to uninstall AVG completely and using AVG Clear and AVG Remover tool. After uninstallation, please install AVG Internet Security first and install your AVG Tune Up - Unlimited further using the instructions given below:
1. Download and run AVG Clear tool: https://share.avg.com/steam/PSP/AVG2017/AVG_Clear.exe . This tool will help with removing antivirus component of AVG 2017 and its traces.
2. Open tool
3. User Account control - click "Yes"
4. Windows safe mode - click "No" (we cannot recommend use the tool in safe mode, because there is a problem with compability)
5. Choose installed version (AVG Free, AVG Internet Security)
6. Click "Uninstall"
7. Click "Restart computer"(1/3)