I have the same problem with my new 3rd generation iPad Pro 12.9in display. You are unable to run QBO through any browser. Screens get cut off, scrolling doesn’t work, once you get into the writing Checks sub screen you are stuck there. Does not work in normal or Private mode on any browser. The iOS app is useless as it does not have the same functionality as either the desktop version or QBO. I wish the developers at Intuit would fix this as more people are starting to use iPads for there day to day work.