Had to do a complete Clean Install on my computer and am needing to put my avast pro back on it. My account is for 3 computers, my account still shows my computer, although it has not been reinstalled.
Go into your account at my.avast.com and select your device. Clicking on settings will reveal the option to delete the device.
Please (re)search before posting as this has been explained many times already.
- Delete the device from your account.
- Delete avast (or in your case everything)
- Install avast.
- Use your current license (file)