You can claim free packages from your offers page once in 20 hours. Navigate across various offer page sections to find the package you can claim.

You can purchase packages that contain Free Sale refresh items.

Please note that if you purchase multiple packages each containing a Free Sale refresh item, then you will not be able to collect the Free Sale multiple times once you are done purchasing the last package - you need to claim them each time after you purchase a package with a Free Sale refresh item.