You can uninstall BitNinja completely and reinstall BitNinja from Plesk
Your BitNinja license key from Plesk should look like RSK__PLESK__YourLicenseKey
You should have received an email from Plesk with the BitNinja license key.
Uninstall BitNinja from your server:
Use the service bitninja stop command to stop BitNinja
On Debian based distributions: use apt-get purge 'bitninja*'; On Rpm based distribution: yum remove 'bitninja*'
In Plesk control panel go to Tools & Settings/License Management/
Click on “Additional License Keys“ at the top
Click on Install key
Upload the license key as a file or enter the Activation key if you have 17.8 or later version of Plesk then click okay
Go to the BitNinja Plesk extension and click on the Activation link under the Buy License tab.
Click on the Log in link at the left bottom and log in with your existing account
Go to the Plesk BitNinja extension, your Plesk License key should appear here.
Click on Install agent and wait until the installation process is complete
You can also modify the BitNinja license key file to include the license key that you bought from Plesk.
Open /etc/bitninja/license.php with your preferred text editor e.g: nano /etc/bitninja/license.php
Insert your License key provided by Plesk after the 'license_key' => variable
Your BitNinja license key from Plesk should look like RSK__PLESK__YourLicenseKey
You should have an email from Plesk with the BitNina license key.
Restart BitNinja with service bitninja restart You can also modify the BitNinja license key file to include the license key that you bought from Plesk.
Now you can log in and use your original BitNinja account to manage your BitNinja agent.