Improve edge detection
Place the page on a contrasting surface with all four edges visible. If detection is imperfect, drag each corner handle to the document edge before flattening.
Improve readability
Try Clean mode first. Increase Shadow lift for uneven lighting, or use Gray and B&W for printed text.
Restore purchases
Open Settings and tap Restore Purchases while signed into the Apple ID used for the original purchase.
Contact support
Email bytesweavers@gmail.com. Include the device model, iOS version, and a description of the problem. Do not send confidential documents.