Support for American Express Card Information Format

[moriel5]

Just a heads up, that American Express uses 15-digit card numbers and 4-digit CVV numbers.

Currently both are unsupported by KeyGo.

[OffRange]

Exciting news! I'm thrilled to announce that the upcoming update will bring support for multiple card number formats, enhancing versatility and user convenience. I'm eager to roll this out and would love to hear your feedback, perhaps even on Google Play! Your input is invaluable in continually improving the app.