If you are being asked to pay when you have a membership it is because of one of two reasons:
1) You're trying to download a Content Partner class which is not included in your free downloads
2) You have used all of your allotted downloads for the month for YogaDownload brand classes
1) Select the "Play Now" option for the class.
With a subscription membership, you can stream (by clicking 'PLAY NOW') ANY class on the site an unlimited number of times, free of charge.
Content Partner classes are not available to download for free as we need to be able to pay the producers of these videos their fair share when a person downloads and keeps their class forever. You can still play/stream these classes an unlimited number of times via your subscription membership.
2) You will need to wait until your subscription renews before you can download more YogaDownload brand classes. This is the case only for Standard Memberships. All Unlimited Memberships have unlimited downloading of YogaDownload brand classes.