Similar issue that was noted here:
NEW 5/22/25 Update on issues updating some USAA accounts — Quicken
Until recently (last few days) I could connect and download all four of my Wells Fargo accounts (checking, savings, credit card and Line of Credit). After having to restore Quicken from a backup (unrelated issue), Quicken only sees three accounts to add and the Line of Credit does not appear in the Add Account wizard. No changes have been applied on the Wells Fargo side so why did the LOC suddenly "disappear" from the Quicken side during the add process?