It is possible your messages are going to your email Spam (Junk) folder or your promotions or marketing folders rather than to your Inbox. Try looking for them there, and if you see them in any of these places, please move them to your inbox. This should guarantee you receive all future mail from Bold School.
You might also try searching "all mail" for boldschool.com to try to find our original email so you can mark it to get future ones from us.
Hope you really enjoy the course!