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On the Submit Request page, use Submit CSR manually to get a box to paste the CSR into. Accept the terms of use etc again and Submit the request.

2025-01-16: You may get the error message "You have already used this key before. If your private key gets compromised, we will have to revoke ALL CERTIFICATES associated with this key." if there is a blank line before the CSR in the box (and maybe for other syntax errors too). Do not proceed, but make sure the CSR format is OK and resubmit. Of course, you will also get this message if you are trying to reuse a key.

2025-01-13: The need to accept the terms of use etc twice will be removed in the future.

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