There are a few different options that could be filtering or hiding the records:
Explorer Bar Filter:
Open the Applicant Action Index.
On the Explorer Bar (Left Hand Side Menu) go to the Filter group.
Click the desired Filter (e.g. My Applicant Actions).
Column Filters:
Click Clear All Filters icon on the top left-hand side of the displayed table.
Range Selector:
Click the Range Selector button (right-hand top side of the table).
Click ALL.
Groups:
If the new user needs to be able to see other users' Applicant Actions, the new user will need to made a member of at least one of the same groups as those other users.