When you create a QR Code using Scanova, it is saved in the Saved QR Codes under the relevant campaign folder created/chosen by you while saving the QR Code.
To edit your saved QR Codes:
Go to Saved QR Codes
Choose the right Campaign folder from the list of all folders. Note that if you have not created any new campaigns, your QR Code will be in the Default Campaign folder
Click on the QR Code you want to edit
You will see the fields with current content
Edit content and click on Update QR Code
Important Note: You can only edit content of Dynamic QR Codes without changing the current QR Code. If you edit a static QR Code, the existing QR Code will be replaced with a new one.