I have submitted a paper to a Springer mathematical journal. The reviewers asked for a revision, and after revising the paper, the editor's decision, alongside with the reviewers' one (of course), was to accept the paper. In the email that I have received it was stated: "You will receive an e-mail in due course regarding the production process". But after that, a whole year has passed and nothing happened. No info after that email. After logging into my author's account, on the main menu in section Completed I can only see: - Submissions with a decision: 1 - Submissions with a production completed: 1.
Generally, what does production completed means? I read about MyPublication service on the Springer website but I never had a chance to see the questionnaire. Just to mention, I did not get any info, nor doi number, nor anything similar. Only that the paper is accepted, a year ago.
Should I write to the journal? To the Editor, the Editor-in-Chief, or some service to inquire about my paper?
There is a similar question (Springer special issue status) but it regards the special issue status. In my case it is a regular one. Also, the comments and answers on that thread were not helpful in my case.