This error happened to me a day and a half ago. Two calls to the normal customer support did not get anywhere.
Reading this thread, I called 888-824-8988. I did not reach the person above, and I did not recognize the 7-digit number as an extension.
In 5-10 minutes, the rep at this Level 2 Support fixed the problem.
Do mention that you need 'deprovision' the number of devices from your account. They have a proprietary tool that will do that pretty quickly. Unfortunately, they don't have anything on our end to do it ourself.
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