Hey, try these steps — they usually help in this kind of issue:

• Try using a different card if available.
• Wait a few hours before retrying — the system might have temporarily blocked further attempts.
• Log out, clear cache, and try again in a private/incognito window/Normal. I hope this might help out.

What I've tried before and not working are:

• Wait for several hours before attempting again
• Tried payment on a different window and incognito (just try it now)

Unfortunately I don't have a different card available right now. Is there any other ways to resolve this issue ?

Since you've already waited, tried incognito, and don't have access to another card, the best next step is to contact Vercel Support directly.

I have the same issue, after updating the payment, it won't just automatically charge, you need to manually go into https://vercel.com/your_project/~/settings/invoices , and click into the overdue invoice and select the credit card to pay.