Maxmind changed their license key format on Feb 16, 2023 so you get an error: "license_key must contain only letters and numbers" when trying to enter your license key. Users can download a hotfix below which allows for the new format:
Warden Anti-spam and Virus Protection
wget https://www.danami.com/hotfix/maxmind/Settings.php.txt
mv Settings.php.txt /usr/local/psa/admin/plib/modules/warden/library/modules/geolocation/classes/Model/Geolocation/Settings.php
Sentinel Anti-malware
wget https://www.danami.com/hotfix/maxmind/Settings.php.txt
mv Settings.php.txt /usr/local/psa/admin/plib/modules/sentinel/library/modules/geolocation/classes/Model/Geolocation/Settings.php
Juggernaut Security and Firewall
wget https://www.danami.com/hotfix/maxmind/Settings.php.txt
mv Settings.php.txt /usr/local/psa/admin/plib/modules/juggernaut/library/modules/geolocation/classes/Model/Geolocation/Settings.php
wget https://www.danami.com/hotfix/maxmind/Country.php.txt
mv Country.php.txt /usr/local/psa/admin/plib/modules/juggernaut/library/application/classes/Model/Firewall/Settings/Country.php
Our extensions have been updated with the fix and submitted to Plesk to be published in the Plesk extension directory shortly.