Thanks for the screenshot, yup i have it the same as yours
When in a business and preferably trying to do the same as what caused this selection of dates (guess a report) right-click on the report link. That will open up a browser and see if the problem persists. If so then install another browser such as Chrome and copy the link you used for example Safari and again check if the problem persists.
As mentioned you have an outdated Mac OS (Catalina 10.15) that is not supported by Manager anymore (should be 12 or newer).
Hello, just an update. I have updated my imac software to the latest and the issue has been resolved, calendar now is correct. so i will close the thread. Thanks all for helping
Glad the update worked. Please mark my post as solution.