We had reports when the subscribe button of Forum is missing so students cannot subscribe to it even though the forum is set up to allow subscriptions. In addition, when a new post in the discussion board is created no email will be sent to members of board.
Resolution of the problem:
This problem is directly related to hiding the "Send Email" tool in the Tools Area. So to fix the problem and allow subscription and email here are the steps to take:
If you are missing the tools area from the menu, follow steps 1 thru 4. Otherwise go to step 5 directly:
1. Click on the "+" on the top left, then select "Tool Link"
2. Enter name (Tools)
3. Select Type: "Tools Area"
4. Click Submit
5. Click the "Tools" menu
6. Locate the "Send Email" tool and click "Show link"
These steps will allow students to subscribe to your discussion board and you will receive emails when a new post is created.
Here is a link to learn more about creating forums in the discussion board: