Please ensure following points are met while activating the application:
- Copy and paste the registration code instead of typing it in the activation dialog box.
- While copying the registration code, please ensure that no extra spaces or characters are copied along with the code
- Ensure that you are pasting the registration code in the correct field.
- Ensure that the registration code matches the application and version installed on your system.
If the application is still not accepting the registration key, then the issue needs to be checked over remote session.