I am 100% in the same boat.  I need all of the exact same questions answered.  I ship anywhere from 40-60 packages a day via UPS, using QB enterprise for the past 15 years, and it is basically useless right now.  This shipping issue has hindered my workflow so much right now, I am actively searching for QB alternatives.  I have 30 users on my account too, so I am paying a small fortune for software that doesn't work.  I was ASSURED by support that I would get a call back on Monday with a solution - still nothing.  Add that on to the dozens of unresolved, open trouble tickets I have had and still have from over the years.  This may be the last straw for me.