Welcome to the forum.
I have approved this post for now. I have no idea what Telegram is and when I clicked on your link, it was clear that users must join Telegram before they can join your group. We need to know if it is free to join Telegram and free to join your group. If there are any charges involved, we cannot list your group.
If anyone else here already has Telegram and can answer those questions, we'll be very grateful.
Of course, approving this post does not mean that UsingEnglish recommends or authorises your group in any way.
Student or Learner