Internal seller tool — NOT part of the extension. Generate a new key after each purchase and email it to the customer.
PLZA-----------
This uses the same offline checksum algorithm as the extension
(see checksum() in popup.js), so any key generated here
will be accepted by Playzia Autofiller.
⚠️ Since this is a fully offline / client-side check, a technically
savvy user could theoretically bypass it by editing extension storage.
For strong purchase enforcement, connect the extension's Activate
button to a real backend (e.g. your Gumroad/Shopify order API) that
issues and verifies keys server-side instead.