The app works ok. It could be way better though. The price is fair. I like the setting that lets you print different sizes in 1 page, that is cool. But I would really, really like an option to fullfill orders ONLY when they are posted at the office instead of when it is printed.
Thanks for your review. This app is a label printer app and not a fulfillment app - means there is no technical way the app knows, when you get the parcel to the post office.
The app and the Swiss Post will provide your customers the track&trace link/URL - and this link will be available once the label is created. It will be updated once you get the parcel to the post office.
Conclusion: The current setup provides service to your customers right from the start!
Regarding the "auto fulfill" within the app - it may be disabled! But this means you need to manually fulfill the order within Shopify and add the track&trace information.