Just had this message:
UniFiCloud – Urgent Message
Please do not upgrade your UniFi devices until further notice. If you do, there is a high chance your UniFi devices will remain disconnected from the controller.
A solution is being worked on and we will update you in the afternoon of Monday January 15th. If you any questions, please e-mail support@unificloud.co.uk.
We apologise for any inconvenienced cause and thank you for your patience.
Kind Regards,
UniFiCloud Support
I believe it must apply to 3.9.19.8123 which appeared today as I recently upgraded my whole estate to 3.9.15.8011 without issue.
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