Hi @MSTucker,
You'll probably need to reach out to your local Canvas team (usually in the eLearning / IT / Digital Education areas) to find out what permissions they have set up. By default, there is not a "co-teacher" role in Canvas, so they may have made something custom. It's also possible that you were added with the wrong role selected. Either way, your local team will probably be able to help you a bit better than those os us in the global community of Canvas users here will be able to. We don't have access to your Canvas environment or account or anything to know what's going on with 100% certainty.
Hope this helps a bit, even though it's not a direct answer/solution. Let us know how things work out!
-Chris