You can view all of your journeys using the online web dashboard. Here's how:
Go to dashoard.bymiles.co.uk
Go to 'My Journeys'
Click the downwards arrow next to ‘Filter by Date’
Select the dates you'd like to view your journeys from
Click the ‘Apply’ tab
You should then be able to see the journeys for the selected dates. To go back to viewing your most recent journeys, just click the 'Clear date' tab.