Hello! I understand you're having trouble accessing your account due to the error message "Card validation failed! Please try again." Let's work through this together to resolve the issue.

First, I'd like to clarify a few things:

1. Have you recently activated your card? If it’s new, it might need activation.
2. Can you ensure that your internet connection is stable? A weak connection can sometimes cause validation errors.
3. Are you entering the card information correctly, including any numbers or codes required?

Once I have more context, I can guide you to the appropriate steps!

1. Card used previously. 2)Internet connection is stable 3) Card information does not ask for birthdate, as it did previously.

Thank you for the additional information! Since you've confirmed that the card was used previously, your internet is stable, and the birthdate prompt is missing, let's try a few troubleshooting steps to resolve the "Card validation failed!" error.

1. Check for Card Activation: Even if the card was used previously, please ensure that it is still active. Sometimes cards expire or need to be reactivated. You can check this by calling the phone number on the card to ensure that it's active.

2. Try to Enter Your Card Information Again: Double-check the card number and any other required information like the security code. Enter the details carefully and ensure there are no typos or extra spaces.

3. Clear Browsing Data: Sometimes, clearing your browser's cache and cookies can resolve unexpected issues:
- Open your WebKit browser.
- Go to the settings and find the "Privacy" or "History" section.
- Select "Clear browsing data" and ensure cookies, cache, and other site data are checked. Clear the data and then restart the browser.

4. Test Another Device or Browser: If possible, try accessing your account from a different browser or device. This can help determine if the issue is specific to your current setup.

If you've tried all of these steps and are still encountering the issue, it might be necessary to reach out to our higher-level support for assistance. You can contact OTC Network support via email at [email protected] for more specific checks on your account.

Please let me know if any of these steps helped or if you have any further questions!