Reinstall avg internet security

Kathie, Uninstall Trend Micro security… Standard AVG info… Have a look @ this article (http://avgclick.me/prepareforAVGinstall).
AVG Guru

Thanks for your help, TREND MICRO did not want to leave, it took awhile to get it completely off the computer, but that was definitely the problem.  Kathie

I am using a toshiba tablet.  AVG Internet Security was purchased for 2 computers, 2 year coveragee in 4/2015.  The computer was already having virus issues and ultimately, I had to have the hard drive scrubbed then my docs etc. reinstalled.  This was done by Geek Squad, and because it's simply what they do, they installed Trend Micro security which was what I was using when I got the viruses; I don't trust Trend Micro to be effective, I will not use it.  So, I got out my AVG info, I have the license number and all the other info.  I have tried repeatedly to install the AVG.  I am able to input the license number but the "INSTALL NOW" button remains grayed out and I can't proceed to installation.  I'm not getting any error message from AVG.  Is it possible I have to uninstall Trend Micro first?  And what would be the ramifications of uninstalling that if I were unable to proceed with the AVG installation?

Kathie, Uninstall Trend Micro security… Standard AVG info… Have a look @ this article (http://avgclick.me/prepareforAVGinstall).
AVG Guru

Thanks for your help, TREND MICRO did not want to leave, it took awhile to get it completely off the computer, but that was definitely the problem.  Kathie

Hello Kathie,
We understand how something like this can really try your patience. We are sorry for the difficulties you are currently experiencing. If you wish to completely uninstall Trend Micro we request you to contact Trend Micro support to uninstall it they will help you with it As we are not trained in their product we are unable to provide the perfect solution for you. Please note that license numbers are case sensitive. Please enter all the characters as it is mentioned above. All the characters are to be entered in Uppercase along with the hyphen symbol (-). To install AVG Internet Security in your pc please use the following link http://files-download.avg.com/inst/mp/AVG_Internet_Security_742.exe and the license number have been sent to your registered email id.
Please feel free to contact us for any further assistance. Thank you.