Only a small number of users is affected by this issue.
Posted 8 months ago. Dec 31, 2017 - 15:37 CET
Unfortunately we were not able to implement a solution yet and are still working on it.
Posted 8 months ago. Dec 31, 2017 - 15:03 CET
No push notifications are currently sent out to mobile devices when chat messages are received. We have identified the root cause and are working on a solution. We will publish the next status update at the latest in 60 minutes.