Thanks for responding! I’m printing from my phone to my regular printer. The printer works just fine. I took a screenshot of the invoice to test and it printed. I’m also able to print from my desktop with no issues. Seems to be an issue specifically with the app. My apps are up to date as well as my phone. I’ve tried both the Square and Invoices app and neither give the option to print upon downloading of the invoice. I’ve deleted and reinstalled the apps. I’ve also shut down and restarted my phone. 

Did you arrive at a solution over the past week? I’m having the exact same issue; the app essentially locks after the invoice is downloaded, and doesn’t provide a print, back, help, or any other option, aside from closing/restarting the  app (on an iPhone as well as an iPad). Square can’t offer much of a solution aside from those which you’ve already taken and a credit for cc processing on $500 (maybe $13 if I’m lucky).  

Nothing! I kinda just threw my hands up when the Square representative told me that the option of printing invoices from a mobile device has never been available. 

Yeah, I guess that’s about where I am too, though they didn’t insist that printing from mobile was not a feature previously available. Thanks for the response.