I had the same problem. Googling led me to this site. Solution for TD Ameritrade imports was to temporarily disable the microsoft defnnder firewall setting "Microsoft Defender Firewall help protect your device while on public network"
I temporarily disabled this setting and entered the document ID again (somehow just disabling defender and keeping my previously typed document ID without retyping it didnt work I think on the first attempt) . This allows the desktop turubotax app to connnect to tdameritrade. I think I saw a comment from someone in the thread that they were not using the web version so this firewall stuff should not apply to them but in my case (windows 11) it actually did matter for the desktop app.
