Manage Your Plan
You can manage your Premium plan from the Cyd Dashboard.
After signing in with your email address, the dashboard will look like this:
Disable Automatic Renewal
If you just want to use Cyd once and then not renew your Premium plan in a year, click Don't Renew.
Your Premium plan will continue to be active until a year after you paid for it, and then you'll get downgraded to a free plan. You can always choose to enable automatic renewal again if you'd like.
Update Payment Method
From the Cyd Dashboard, click the Manage Payment Method button to update your payment method.
Download Receipts
If you scroll down to the bottom of the Cyd Dashboard, you can find all of your receipts available for download.