I just upgraded to QB 2020 Desktop Pro after manually entering Amex transactions for years. That was the main reason I even upgraded. I can download them fine and open the download file. But when I get the box that says to select the account to import the transactions to, the Amex account is not listed in the drop down menu. This is the box you get after you click "import transactions now". I've tried automatically importing, manually importing, and I hit the refresh thing. I see the Amex account in the box on the left when I go to the banking center. This is a well established account. I have no idea why it doesn't show up on the pull down menu as an existing account. I had no idea there were issues with Amex syncing until I started reading this thread. I hope you can help. I'm not getting an actual error message.

Oh, I should add, I also went through the whole thing in bank center when you set up the initial sync. I typed in American Express, logged into my amex account, and then it said select account from menu or create new. My other bank and credit cards were listed, but not Amex.