Trying to print receipt for postage label - Blank page appearing with no receipt

Anyone else having this issue? After I purchase a postage label for an order, I like to print the receipt and keep it on file.

Under my order summary and postage label options, there's an option to 'Print Purchase Receipt'

My printer preview pops-up like it always has, only the pages are empty. This only started happening about a week ago.

I'm in Canada and use Canada Post for shipping.

IMGUR: http://imgur.com/a/fsOMI