You are welcome to ask for feedback, but be mindful of how you engage your students, in this article
you will be able to see how to ask and how not to ask for feedback of your course.
You can also contact our Trust & Safety team at firstname.lastname@example.org if you want to get more information about the guidelines.
I hope this helps.
I believe you can ask for reviews in the bonus lecture. However, you still have to bear in mind the "Rules Against Manipulating or Influencing the Review System", even in the bonus section.