Thank you for the update and letting us know you're still receiving errors. I'm wondering here if we might be able to fix issue with a different connection method. I would recommend trying to see if we might be able to connect using the Citi Cards connection. You should be able to go across the top to tools > add account then finding Citi cards.
See if you're able to download your accounts from here. From
there we'll better understand our next steps/options.