The messaging system remains open throughout the mission control, i.e. 30 days after the end of the mission : you can therefore contact publisher to ask him to make a modification to the article.
For an ongoing mission :
If your request concerns the anchor, the link to be integrated in the article or the date of publication : once you have agreed with the editor, you will have to contact us on the chat.
If it concerns the price of the mission or an option : once you have agreed with the editor, you will have to contact us on the chat. We will cancel the mission and you will be able to restart it in one click by making the desired changes.