Unable to post to nmusers

Dear all, Since Monday I have made three attempts to post a reply on the thread "question in Box-Cox Transformations in K-PD model", initiated by Kehua. None of these attempts have been successful, at the same time I have noticed that other topics have successfully reached out via the distribution list. Do you have any ideas why some e-mails are not distributed on the list? I did not include any attachments to the e-mail, and did not use any kind of wording that could be seen as offensive... Best regards Jakob