Clock in a very big size

Hi,
I’m in the same position of Orbitalflare, some posts ago:
I really like the look of this event calendar, but unfortunately it is not displaying correctly once I’ve uploaded some events. The clock.png file seems to be displaying at an extraordinary large size? I would like the calendar to look exactly like the one in the screen capture.
thank you

https://www.ads-software.com/plugins/next-event-calendar/