All Hindenburg products, including trials, are contained in the same program. You can only have one Hindenburg installed on your machine.
When you buy a PRO licence key, or request a trial, the licence key gives you access to the PRO features in the same program.
Please just enter the new PRO or trial licence key in your existing installation, and you will have access to the PRO features (remember to choose PRO trial when prompted.).
When you are done with the trial, just reenter your original Journalist licence key details in the Registration field.
Hindenburg Support Team
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