rapidrig.com is built through Wix, which has been a fantastic tool for creating this website. There is one drawback though; users cannot simply log back in and download their purchases at their convenience. Fortunately, Wix has a feature request for this very thing. So if you can spare a moment, please follow the link below and vote for this feature.
This feature will be extremely helpful to you so that you always have access to the latest versions of your purchases and downloads. With your help, maybe it will be implemented sooner.
Thanks for the help!