Hi,
I am new to online course creation and new to Udemy.
I have 3 questions for Udemy but cannot find an email address for support nor answer on the instructor Q&A. And finding answers on T's & C's for specific emblems it's like 'looking for a needle in a haystack'.
So, I wonder if I find help here 
1_Can I sell the exact same course on other market places? ( I read the exclusivity part of T's and C's yet I am still not clear).
2_Can students from Udemy join a private FB group for course support and extra resources or Udemy will not accept the direct contact?
3_ I understand Udemy 30 days refund policy. I am unclear on how does it work though. Technically a student can complete the course within that time and uses the majority of the content, to then asks a refund. How does Udemy keeps this in check and does what is fair for both students and instructors?
Thank you