Using TT Deluxe 2022, select Morgan Stanley Wealth Management for the import. Entered SS, user, and password. Receive message that one of those was incorrect; didn't connect successfully to Morgan Stanley. Tried a couple times, same result.
After searching internet, found that I need to enable "Third Party Data Sharing" within my Morgan Stanley account. Went to "Profile + Settings" for my user, then under "Login + Security", selected Security Center. Under "Third party data sharing", it was Disabled. After change to Enabled, went back to TT and the import went through successfully.