Steps:

If the receipt is last receipt you saved,  just Click on Sales Icon

   to the right top of the front register screen.

After navigating from the Sales Register, it will show you all the transactions that you have made from its recent to the oldest.

click/select on the arrow to get more information of the sale that you want to reprint its receipt, after this click on print receipt, That's it!

When you reopen a receipt you can also print a Gift Receipt and Email a Receipt. 

Other ways of doing this:

Sorry! There are no other ways of doing this process. you can look through the receipt info from Transaction section.