The current version of the ClickUp API doesn't provide data when the user hasn't set a time.

ClickUp simply sets 4 AM in the local timezone of the user who created the task.

Therefore, if a Pleexy user sync tasks created by other ClickUp users in different time zones, it will result in setting the time.

You can read more about this in ClickUp's documentation:

Workaround: Add a flag to ignore task time.