All Scrum and Agile courses on the PDUnow site are accepted for Scrum Education Units (SEUs) for your CRM certification renewal, as well as being accepted by PMP renewal. PDUnow courses are accepted because they help students grow as a Scrum/agile practitiioner. Certificates of completion for these courses will have a PMI claim code and SEUs on them.
PMI and the Scrum Alliance use the same standards. PMI defines 1 PDU as equal to 1 hour of training. ScrumAlliance defines 1 SEU as equal to 1 hour of training. This means that 10 PDU course will provide 10 PDUs for your PMP certification renewal and 10 SEUs for your CRM certification renewal. You just need to report the following information to the Scrum Alliance: Course name, date of completion and how many hours were spent on the course. You will not be required to submit a claim code or any other type of documentation to the Scrum Alliance.