Below are some possible reasons your Chipper USD card may get declined on X (Twitter)
You are trying to renew (or restart) your X subscription with a new card different from the one currently registered on your X account.
You have linked the same card to multiple X accounts.
Any of the actions above could potentially result in your account or payment card being flagged by X.
Steps to take when your X ad monetization stops or fails to reactivate
Renew your BlueTick subscription via a web browser, then complete the process on the X app. At the final stage of the process, where you would be asked to select either Chrome or the X app, please select the X app to successfully complete your payment.
How to prevent future card or payment declines on X
Please ensure that each X account is associated with only one card.
The name on the card should match the X account being verified.