Unable to subscribe or buy credits

Hello

Im planning to cancel my super grok heavy subscription once the the 67% offer ends. So I decided to buy some credits mea while to try Venice before I subscribe. But I keep getting errors on both the app and the website when attempting any sort of purchase, sub/buying credits

Errors: subscription is not available, your card does not support this type of purchase (same card im using for grok sub)

Not sure whats going on but appreciate some feedback

Thank you