Hi all – we have an update on the source of connectivity issues here:
I'm sorry for the ongoing issues this might have caused. The issue is complex (as laid out by Matthew's thread), we are still working on diagnosing the problem and working on a Device OS fix. In the meantime, completely depowering and then repowering devices should get them to re-connect; we are still trying to find a fix for remote devices (do try to disable the SIM and leave it disabled for 10 minutes or more, which may work).
If anyone experienced runaway bandwidth consumption, please send your bill in to customer service and we're happy to refund the bill. @peergum I'm sorry you experienced this, you shouldn't be charged for these sorts of problems.
The team is still hard at work on this issue, and we'll keep you posted on further progress.