Every time I add a product, SKUgen inserts it before all the serial numbers which inturn raises all the serial numbers it already generated by one. A great way to screw up your inventory management.
Thank you for the feedback.
The app is not changing already generated SKUs, unless you choose to re-generate the SKUs.
For new products we recommend to check the "Set only missing SKUs" checkbox. This will prevent changing already generated SKUs.
If this is not what you need, please get in touch with us on our support email and we'll be happy to assist with the settings or implementing new features to improve the app.