I have Trend installed , McPhee was already installed for free and now wants me to pay 

Hi @tcanfie,

Welcome to Trend Micro Home Users Community!

Are you referring to McAfee? Yes, you can remove McAfee. Please refer on the link below to uninstall McAfee on your device.

How to Remove Programs Incompatible with Trend Micro Security on Windows PC

You can also remove McAfee from the Control Panel. Here's how:

1. Go to Settings.
2. Search Control Panel.
3. Click Programs > Uninstall a program.
4. Search for McAfee > Uninstall.
5. Wait for the program to uninstall and restart your device.

Hope this helps!