How to Re-register a device in Apple's Provisioning Portal?

I used up all my 100 device registrations and I'm going to be renewing my subscription soon (in abo开发者_如何学运维ut a month.) So I removed unneeded devices so I would have openings available once my renewal kicks in. Unfortunately, I removed one too many and now I want to put it back in.

Is there a way to re-register a device even when the "add" button is no longer in the UI?

---

No, I'm sorry - you must wait until your renewal kicks in. If you reached your 100 device limit you can't remove and then add devices, you just have to wait. If it's really desperate I'd suggest getting in touch with Apple support, although I'm not sure how much good it will do.