Mobile App: How to Edit Products on the App 1. Log in with your InvoiceASAP Username and Password. 2. Tap on Manage App. 3. Tap on Products and Services. 4. Tap on the product or service you want to edit. 5. Once you make an edit to the item, tap Done to save the edit. Have more questions? Submit a request 0 Comments Please sign in to leave a comment.