You have already submitted an article to a Research Topic, but you are still receiving reminders. The most probable reason for that is a mismatch of email addresses in our system.
Possible scenario: the Topic Editor has used your personal email to communicate the organization of the Research Topic. You had an article that fit nicely within the topic and you decided to submit it. However for the submission, you used your institutional email.
This is perfectly fine, however our management system doesn't know that you have already submitted a manuscript and keeps on reminding you about the approaching deadlines. To prevent any reminders, add both emails to your profile: How can I add additional email addresses?