I've been having the same problem with both my own file and with a client's company file, both using the desktop product. Downloading transactions worked just fine and then all of a sudden stopped. I have tried everything, to no avail, including deactivating and reactiving bank feeds for the account. When connected to the Amex site to re-establish the connection, it wants to add an app and download to Quickbooks Online. There does not seem to be an option for connection to the desktop products. HELP!
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