Why I cannot see Backup to Cloud Pro in Additional Keys in Plesk

Question

• Why I cannot see Backup to Cloud Pro in Additional Keys section in Plesk?
• How to check that Backup to Cloud Pro extension was activated?

Answer

Backup to Cloud Pro extension works like a feature and it is expected that it is not reflected in Additional License keys section in Plesk.

To activate extension in Plesk, retrieve keys in Plesk at Tools and settings > License information (previously License management) > retrieve keys. 

Then, scroll down the License Information page until you reach the section labeled "Backup to Cloud Pro extension," where you will find that it is enabled (ON).