You can re-post / re-stock the products that you have sold and is 'Out of Stock', so you don't have to input everything again.
Here are the steps:
1. Navigate to your Product Item
2. On the top right corner there is '3 dots', click on it
3. Click on the link that is called 'Re-post Product'
This will put your item as available, and your customers can buy them!
If you are having trouble with the App, please Submit a Request and we will do our best to assist you!