App not extracting card info after rectangle frame completes

[msndvlpr]

General information:

• SDK/Library version: 7, 5.1, 6
• Android Version and Device: Samsung A5, Sony Z1, Nokia TA 1047

Issue:

Application does not extracts any information from scanning card after rectangle frame completes! I tested it with 3 different devices and many different cards but I got same result: when the rectangle frame completes on the card nothing happens. This is while the "Detect card-ish rectangle only" option works after the app detects the card frame but it just takes an image of it. Does it work for Paypal cards only? Please help me where I am wrong.