Okay, I too am having this problem.  I want to be clear about this to QB.  IT DOESN’T WORK ON A BROWSER OR THE APP!!!  Clearing my cache doesn’t help.  After reading this entire thread, it is clear that QB does not understand the problem.  If you have an Apple product QuickBooks is NOT WORKING.  I’m to the point where I am considering switching to Freshbooks.  This is the first help page I have found, and it is very clear QB isn’t listening to the people posting.