FingerprintJS was not working in Firefox due to its Browser Privacy Enhanced Tracking Protection.
When loading the scrip we would get "Error adding script 'https://openfpcdn.io/fingerprintjs/v3/iife.min.js' to document". To solve this issue the way the script is added was changed, now it's locally in the application and we have a block that we can add to the screen or layout.
The action FingerprintJS_Load was marked as deprecated and no PRO version functionalities are supported.
Finally I decided not to upgrade to the latest JS version because Starting version 4.0.0, FingerprintJS is licensed under Business Source License. As such this component is in version v3.4.2