I'm having the same issues for a good five days now and tried both chrome, firefox, normal and incognito. these above mentioned suggestions are not really solving the issue which is not a browser or computer problem, more like a software problem as it seems like we are not the only ones. I'm hoping QBO will keep us posted if they were able to resolve the issue. as an accountant this is a huge issue on a daily basis when you are spending 6-10 hrs in QBO a day and you are in the middle of something.