If you purchased Serial from the Mac App Store (MAS) we will not have your e-mail address or a license key on file.
However, you may still use your previous purchase to qualify for a discounted upgrade by following the steps below:
Download Serial 2.0.13 from our website and run it.
While holding the option key, go to Help → Crossgrade MAS Purchase....
Enter your name and e-mail address so we may process your request. We will not use nor share the provided e-mail address for any purpose other than sending your upgrade information and storing your license key for retrieval at your request.
We will validate your receipt and send you an e-mail with your upgrade options.
If you purchased Serial directly from us, see Upgrade your Direct Copy of Serial instead.
If you have any questions or encounter any problems please let us know.