Friends,
I just downloaded MS Office 365 for Mac. Excel will not let me print more than one copy of a spreadsheet. I spent time on the phone with Canon trying to resolve the issue (I have Canon printers). It is not a Canon issue (they said). Note: I can print as many copies as I want from Word documents. Also, I had no issue with printing multiple copies from Excel Office 2016 for Mac on my older MacBook. The issue seems to be with 365.
On another note: Word 365 messed up a nearly 300 page document I opened from Office 2016. The pagination (formatting or something) is all different. Which, wouldn't be a problem, except that I'm still printing section by section as we go through it and now the page numbers don't align). Though, I can print as many copies as I want, even from this document - just not from Excel.