To change the order of Donation Products on the Donate page: on the skin that the Donation Products are on, go to the Web Control Panel <YourCountry.patronbase.com/_<OrgID>/Admin> Page Styling > List Styling >
Choose the Sort order:
You can also change the Direction: and don't forget to save changes (bottom right.)
Then once you have made the changes, Refresh the cache on the donate page to reveal the changes.