I have a RedHat Developers Subscription that appears to be registered and attached to my RHEL 8 system. However, I have absolutely no idea how to either enable the developer repositories, nor if I've even attached the subscription correctly. It's not obvious from the documentation what the next steps are.
My current symptom is that if I do any action with either yum or dnf, all I get in response is Failed to synchronize cache for repo 'rhel-8-for-x86_64-appstream-rpms', ignoring this repo. This also happens for BaseOS as well. I would think that implies that the subscription likely isn't attached correctly, but I'm unsure. Subscription Manager claims that everything is kosher, but it doesn't seem like it.