I'm with Tangerine (Canada). I was getting OL-221A & B errors while attempting to download transactions, and I read somewhere to deactivate and reactivate the account in question. I have several accounts in Tangerine and am getting the same errors everywhere. So, I deactivated the checking account, and when I attempted to setup/reactivate it, it left me no choice but to create a "new" account. Nowhere was the "link to existing account" option! Downloading transactions for other banks and institutions is all working fine; it's just Tangerine!
[Edited Readability]