With the help of Ring Central, I exchanged a VVX410 for a VVX500 on a user's account. This was a VVX500 that I used during testing, and I factory defaulted it, then followed the instructions to re-provision. The re-provisioning appears to have worked (The user's name is displayed, the extension works both ways, etc), but the new phone will not pick up any onscreen button changes I make. It currently shows four buttons, all with the user's name. If I add any buttons through the portal, it says it is restarting the phone, but it doesn't. If I restart manually, it comes back up without the new buttons assigned. I have factory defaulted twice, and both times I experience the same issues. All other phones are working without any issues. Any ideas?