To update payment information for a subscription or an account with the Seattle Post-Intelligencer, users typically need to log into their account on the Seattle PI website. Once logged in, there should be a section or link related to account settings or billing. This area usually allows users to manage their payment methods, update credit card information, or change billing addresses. If users cannot find the necessary links, it may be helpful to check the Help or FAQ section on the Seattle Post-Intelligencer website, as these pages often provide detailed guidance on account management. For specific instructions or additional assistance, users may consider exploring the contact information available on the current web page.