For those of you that were experiencing this issue, check the latest reply to your tickets and reboot.

Here is what was sent out earlier to those with tickets in:

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We've been monitoring the logs closely throughout the night for a handful of customers reporting this issue. While it's not a widespread issue, we were finally able identify a similarity with the 15 or so customers seeing their registrations drop and have applied a fix for you.

It appears that in some cases, small amounts of network latency (delay) were causing the device's periodic re-registration to fail. The device was waiting for a response and "timed out" before it got the response back. We've made an adjustment to the device so that it will wait longer for a response before giving up, so it should be more resilient in the case of any network delays either on our end or on the path between our network and your ISP. The device should now be waiting plenty of time for this and not timing out prematurely.

Please reboot your adapter so it can pick up this change and establish a new connection with us.

This should resolve the issue for you. Please update us next week and let us know if you continue to see any issues or if things are stable for you after this change. We apologize for any inconvenience this has caused and appreciate your patience.
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I'm going to sleep now, but will explain more later this weekend. This is not a system-wide change since most users aren't experiencing the issue.

If you experience a registration loss, just open a ticket and this can be applied to your account as well.