the problem is that it sees the wrong hours, a message appears
Would last have run at Tuesday, March 28, 2023 at 4:58:04 PM Central European Summer Time; would next run at Wednesday, March 29, 2023 at 8:08:04 AM Central European Summer Time.
Ignoring the H/ which is jenkins only for randomizing the minute
“At minute 10 past every hour from 8 through 16 on every day-of-week from Sunday through Friday.”
My guess is the server is in one timezone (UTC maybe? check your systeminfo page), and you are in a different timezone, and that string is your timezone.