I have the same problem with a notification of 2 events: white text in red disc.
This is on one site of a multisite with the event manager plugin network enabled. I currently have no future events and no bin.
The website is hosted on 1 and 1 Ionos in the UK, with a MySql 5.7 database and php 7.2.
There is only one blog so there’s no blog 1 or blog 2 etc tables
I am the network admin and I keep on forgetting to change the author to the default subsite author, so I keep going back to changeover the event author ( within the admin ).
Looking at _em_events in PhpMyAdmin I can see that most of the event owners are ID 4 which is the correct author, but the first 9 events have id 1, which is the original ID they were supposed to be changed from. Looking at the posts on the web admin they all have the corrected author!
Two of the tables ( event id 30 & 31 ) have event status 0 – All the other tables are marked with event status 1.
‘Remove Orphaned Events’ is not on the website admin but it is in the multisite admin – but either way, it doesn’t make any difference to the problem notifications…
After Running it I get the status message ‘Found 2 orphaned events, deleted 2 successfully’ but it doesn’t make the notification disappear on the website’s admin. If I repeatedly use the button I get the same status message but no change….