How to install license for ServerShield by CloudFlare extension?

Question

How to install a paid license for ServerShield by CloudFlare extension bought at Plesk online store?

Answer

1. Login to Plesk
2. Click Retrieve Keys under Tools & Settings > License Management:
   This will retrieve the additional paid feature from the licensing server and upload it to Plesk.
3. Go under ServerShield by CloudFlare extension (at the left menu in Plesk) > Settings tab
4. Fill in the Host E-mail and Host API Key fields if you have already got them on a CloudFlare side. If you do not have them, click on Otherwise, create an account and activate this module using <your email>  or Activate this extension using <your email> link:
5. Click Submit
6. Go to Server Dashboard tab and click Recheck license link. As a result "Free version" should be updated to "Plus version"

Additional information

Installation Guide ServerShield by CloudFlare.