It is usually caused by expired information and frozen cards.

The most likely reason for a credit card to be invalid is that the card has expired. Credit cards have a validity period, usually 5 years, which will be printed on the lower left side of the card. If it expires, you can contact the bank to renew the card. If the card has abnormal transactions or risks, it will be invalid if it is frozen. You need to call the bank customer service hotline to find out the specific reasons. Guiyang Bank service hotline: 4000079631.

Bank of Guiyang is a large regional joint-stock commercial bank. Founded in April 1997, it is headquartered in Guiyang City.