Hi, are you sure that the email you're trying to send the key to is the one you used to register with? Did you check your junk folder?
I suggest you install avast 5 Free. With version 5, registration is easier. Just go to the Maintenance tab, click Regitration, and fill out the form. No need to email the key.
+1.
I recommend downloading the full Avast setup file from
here.Download the Avast uninstall utility from
here.Go offline.
Remove Avast from "add/remove programs" in the control panel.
Reboot into safe mode.
Run the uninstall utility.
Reboot into normal.
Install Avast from the setup file. When the orange icon appears in the system tray, go back online.
Reboot. A second reboot may be required. You'll know it's good (after at least one boot) when the definitions are updated.
Right click the tray icon, select "registration", follow the prompts.
I have never been spammed by Avast.
Welcome to the forum.