Last night we had a sync issue of about 30 minutes. Our monitoring system alerted us so we could take quick action. Luckily our automated scripts took all of the work out of our hands we just had to wait for the scripts to kick in and do their work.
Although downtime was only 30 minutes it seems that there is something wrong with the telegram bot from ADApools.org which showed a much larger downtime which of course is not correct.
Even now, after more than 8 hours, ADApools bot still have not notified us about the restored relays. To avoid this misleading info we contacted ADApools. Hopefully they can give us some more feedback on why messages are delayed and/or not being send thus giving the misleading information of malfunctioning nodes.