Hi Benedikt,
Sorry to hear about the trouble with translating your course. I'm happy to help!
It sounds like you've duplicated your course correctly, as stated here, but you're getting an error message saying that the course doesn't match the translation file. This usually happens when changes were made to the duplicated course after exporting the XLIFF file, including adding or removing blocks/lessons. Can you please confirm if that's the case?
If not, we'd be happy to investigate this issue further. Would you be willing to open a support case and share the duplicate course and the translated XLIFF file with us? We'll reach out soon after we hear from you and send you instructions on sharing your Rise course.
