AS you can see in your first datetime parameter because 04/04 is the same it seems correct but is wrong as well. So you are having issues with the datetime due to the formatting of the date. You should use:
Format(YourDateParam, "yyyy/MM/dd hh:mm:ss tt")
Access needs an unambiguous date.
You might like to remove the time element as well.
better use parameterized queries
] so it will be automatically formatted to the proper datetime.