Help with Renewal of Webroot

I've had Webroot installed on my laptop for 4 years.  
 
Best Buy/Geek Squad auto renews every year.  However, this year, there was some supicious activity on my credit card, and we inadvertantly flagged the Webroot payment as an invalid payment.  So... Webroot cancelled our protection, which is understandable. I contacted Webroot, and asked how I could get reinstated.  Their response is that I had to return to Best Buy and purchase the Webroot.  And, I did.
 
 However, when I try to install it, I never get a screen to enter the new key code.  When I try to launch, the existing Webroot opens up.  However, I don't think the new software has loaded because I keep getting reminders from Geek Squad via email to upload the Webroot program.  
 
What do I need to do?  Uninstall the existing Webroot?  I'd think the new Webroot would recognize and do what it needs to do without me having to uninstall the original program.  
 
Thanks!