Transaction failures when purchasing coins at sweepstakes casinos can occur for several reasons, such as insufficient funds, incorrect payment details, or technical glitches. To resolve these issues, first, check your payment method for sufficient funds and correct details. Next, ensure your internet connection is stable. If the issue persists, try using a different payment method or contact the casino’s customer support for assistance. Providing a transaction ID or error screenshot can help them resolve the issue more efficiently. It might also help to clear your browser cache or try accessing the site from a different device.