Hey @GLC,
This error is delivering because your students have already applied. There are two routes that we can go in this situation. We can either have your student’s create a temporary Twitter account that you can add to your organization account, or we can wait for your student’s accounts to be approved.
I know this is not ideal, and I apologize for that. We have listened to you and have plenty of work to do to improve this process. I will make sure to keep you updated on our progress.