I'll echo that this is NOT solved. After waiting for quite awhile for chat help, I indicated (a couple times) what the issue was, and that I wanted to be added to the list for a fix. 

The "helper" indicated they wanted to "set [my] expectations", that 2019 has been discontinued, and to not expect support or an update to fix it. They wanted to send me to the small business team to find something that would work - ie. "let's send you to the team to try and sell you on spending monthly amounts for our cloud service, rather than fix the program you've already purchased and use". 

So I wouldn't expect we're going to get any help on this. I'm a one person business, and don't have the capital to be paying them $60/month, nor do I wish to. I can't say I'm all that surprised - I wish there were other, better, options for those of us on Mac. As it stands, I have an old laptop on a prior OS that will run QB 2019. I'll be shocked in a good way if they actually fix this, so we can use what we've previously purchased, and it would certainly make things easier than having to run two machines. But welcome to end-stage capitalism, I guess....