Make sure you copy and paste the Activation key directly from the email you received after the purchase, rather than typing it manually.
If you continue to experience issues, check the version number of the software against your purchase and download the latest version from our website.
Moreover, ensure you’ve downloaded the correct installer. Use the download link provided in the email or visit the product page to download the software for free. Then, activate your software using the Activation key received on your email.