Scheduling for Article multiplacement not working

Hi! We scheduled a multiplacement article to be published on 16th of January but it didn't appear on site. We noticed afterwards that the clock icon doesn't show up like it does for other articles ("Site maintenance" is the multiplacement one):

Inside the article it does say it will be scheduled (but it wasn't):

Not sure if it is related to this community post, as we also see the “Missing translations” texts:

We don't know how the get rid of those texts, because when I open each of the translation they have the correct language chosen:

Inside each article we have set a label “alert” which have always worked:

We have also set each to be visible to everyone: