I have the same problem I think, cannot register the machine agents under an application. I am running on a SaaS controller with version 184.108.40.20676. Have you tried clicking on Enable and then take your application from the right selection box and move it to the left? That seems like it might be the right setting. However when I do that, the configuration does not seem to take. If I click Enable again, my application is still on the right hand side as if I never configured it.
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