Simply open-up your ClipDramatizer 2.0 software. Make sure you logged in your Explaindio Membership account credentials inside the software. Here is a support article which might help: How To Activate My User In ClipDramatizer 2.0 Software?

Try setting the video duration more than 300 seconds. If you can do so, it means your ClipDramatizer 2.0 PRO is already active.

Or, go try adding more than 10 effects on a single video. If you are able to add more than 10 effects on your project it means your PRO is already active.