Sometimes when you import course content or complete a course copy, the main navigation menu will be overridden. This can result in the SimpleSyllabus link being removed from the menu. You will need to make the link visible again. Here are the steps to make SimpleSyllabus visible:
You will need to login to your Canvas account and access the course.
On the navigation menu on the left-hand side of the screen, scroll to the last item and click Settings.
Next, go to Navigation. Drag and drop items to reorder the course navigation menu. Or click the three vertical dots on the right of the item and select Enable.
Finally, click Save.