You can easily remove your demo license and load your newly purchased license by going to Dashboard > License and then by clicking on either Delete Demo License or Change Serial
This will then log you out and you’ll need to login and authentic your Snapt install using your Snapt Shop (e.g. shop.snapt.net) username and password used when you first registered for Snapt*
After you’ve successfully logged in again, you can then select the newly purchased serial number. You’ll then need to follow the guide Serializing a License to apply a unique install key to your license.
*This will not cause any downtime.