Include Lead Forensics code in all pages
The better way to do this is by placing the script in the code for the theme.

You may be able to pretend this is another script and use a Drupal module that adds a script to the theme.

An issue you may be having by using a block is that unless you have the right permissions and also are careful to preserve this code as source, Drupal may try to alter what you enter for security or because you don't have permission to add a script.

We are a user/partner of Drupal and LeadForensics.