I want to cancel my subscription but I need to pay first. How do I fix this?

For cancellation to work you will have to fix any payment issues the account has. If you are eligible for refunds and amount that may be deducted would be automatically refunded within 14 days. See the following articles

https://helpx.adobe.com/account/individual/subscriptions-and-plans/renewals-and-cancellations/cancel-adobe-subscription.html

https://helpx.adobe.com/account/individual/terms-policies-and-regulations/adobe-subscription-terms.html