There are three easy ways to find your check-ins history.
Home Screen
On the Home Screen; select Check-ins from the actions tile.
This will open the History Page.
Rewards Screen
Select the Rewards Badge in the Navigation menu (Badge / Ribbon icon).
Select Check-ins from the action tile.
This will open the History Page.
While still in the Rewards section; scroll to the bottom of the page.
Select See All> to the right of the HISTORY title.
This will open the History Page.