: When the registration window appears, copy and paste your 21-digit key into the field and click "Activate." Troubleshooting Key Not Found : Check your spam or "Promotions" folder for an email from . You can also retrieve your keys by logging into your customer account on the DxO website Activation Errors
: You can download a fully functional 30-day trial directly from DxO. Upon requesting the trial, a temporary activation key is sent to your email to unlock all features for the duration of the trial period. How to Activate Color Efex Pro 5 Activation Key