We are sorry that you are having trouble logging into your Zip account. A change in phone number is a common cause of Zip login issues.
If you have recently changed your phone number you'll need to update this in your Zip account. To change your Zip account phone number, refer to the steps in this article.
If you have not recently changed your phone number and still are unable to log in, please submit a request ticket to Zip Support here with a screenshot of what you're seeing on your end, and we will investigate the issue.