The official documentation is a growing repository of many valuable tutorials and guides on how to use the service. Whether you are looking for how to access your our formatted documents or programmatically access the API, this is the place to start.
Haven't found what you're looking for? Ask the members of the xep-support community. xep-support is a discussion list for XEP users to share opinions about XEP, its features and usage, and for general how-to questions about XSL-FO. This is the place where you can get all the support required from the RenderX team as well as eachother.
As always, the team stands ready to answer any questions you might have directly. Simply send an email to firstname.lastname@example.org and we will do our best to assist you in any way possible.