Thanks,   Yes to clarify, it's neither of those, it's the Analytics/Location API (under General for a site) - which requires a URL to post data to, and then a secret, which is exchanged when the data is sent to verify it's source.   That secret is disappearing when firmware is updated, and so the data is no longer accepted at the receiving end (as the sender can no longer be verified).     It's consistently happening across more customers as /when firmware updates are being rolled out to the MR range of devices so far.   ... View more