Delete old alerts, please!

[Trailermann]

Stop the bubble machine! (Old Laurence Welk joke)
I have a thousand or more alerts, and can't figure out how to delete them. Any ideas?

 

[evolved]

https://www.reef2reef.com/threads/reef2reef-will-be-down.594595/
It's an artifact of the server switch (above). Can't do anything about it I'm afraid. They will self-correct, as the software only keeps so many once you're active.