Replacement Key Code isn't accepted by Webroot Program after prolongation

Hi Folks,
I just bought a prolongation for Webroot Secure Anywhere. After installing I was asked to enter the issued key code, so I did.
BUT after hitting  the activate button I got the following Error:
 
ERROR FZLC1111: A replacement key code has been issued and must be used with this product line.
 
Even after checking and re-checking the issued key code I got teh same error message over and over again.
My old version expires within 5 days, so a solution is quite urgent.
BTW, I did remove (un-install) the previous version and re-installed the new one with the same result.
Any help in this would be appreciated.
Thanks in advance
Aad
Follow Up:
 
I did request my keycode as suggested and recieved the following email:
 
Dear Valued Customer,

Thank you for choosing Webroot!  Below are your
download and installation instructions for Webroot SecureAnywhere
Antivirus.

You must use this keycode during installation and all future
installations:

Keycode:here stood the issued keycode. This one still doesn't work
New keycode format:here stood the keycode from my expiering product
Product Name:WAV
Expires:2013-11-25 09:27:44
Allowed Users:1
 
So, what else can I do to make the prolongated version work?
Aad