Hi there! I see you're running into an issue where the Send2Corrections app says your credit card info is incorrect, even though it’s not. Let’s work through this together. To get started, can you tell me if you’re entering the card details manually or using a saved card? Also, have you checked if the card is authorized for online and international transactions? Sometimes restrictions on the card can cause errors like this.

Meanwhile, here are some initial steps you can try on your Linux setup:

1. Double-check each field of your card info: card number, expiration date, CVV, and billing address—typos here are common causes.
2. Try clearing your browser cache or, if you are using the mobile app on your Linux device or emulator, try logging out and back in.
3. Attempt the payment using a different browser or in private/incognito mode to rule out any browser-related issues.
4. Confirm that your credit card has sufficient funds and is not blocked from online or international payments by contacting your bank.
5. If you are using any VPN or proxy, try disabling it since that can affect payment processing.

If these steps don’t resolve it, we may want to dig into additional details, like whether this problem is happening with one card only or multiple cards, or if error messages provide any specific codes.

Would you mind trying these and letting me know what happens? That way, I can guide you more precisely.