Problem with one of my bank’s linked accounts not syncing

I have been using YNAB for about 4 months and love it. I have all of my bank accounts, CCs, etc. synced. Up until recently all of my 5 accounts at my primary bank worked fine (business checking, personal checking, savings, joint checking with my wife and HELOC). Now, all of the sudden there’s an error with my HELOC syncing. It shows in my actual bank account. When I try and reestablish my bank account connection it shows the other 4 accounts only. Any thoughts?