Can't Connect Mercury Bank to QuickBooks — Ongoing Error 590

Hi everyone, I’ve been running into a frustrating issue with Mercury Bank not connecting to QuickBooks Online, and I’m hoping someone else has either experienced this or found a workaround. It’s been almost two weeks, and I still can’t get my Mercury accounts to sync. I originally had the integration working fine for a long time. But after Mercury transitioned from Evolve Bank & Trust to Column N.A. (their July 15 cutover), everything broke. At first, my old bank accounts still showed up in QuickBooks, but none of my new Mercury accounts were showing. I figured I’d disconnect and reconnect from scratch — but even that didn’t work. Now I get this error every time I try to reconnect: We can’t connect to MERCURY right now We encountered an unexpected error while trying to connect. Try signing in one more time. If that doesn’t work, it’s best to wait a while before you try again. (590) I’ve completely removed and re-added the accounts, tried using incognito mode, and even re-entered my login credentials multiple times — no luck. It’s super frustrating having to manually import CSVs when I used to be able to just click the refresh button. I suspect the issue is related to Mercury’s backend change from Evolve to Column N.A., but I haven’t been able to confirm. Is anyone else experiencing this? Any luck getting it resolved? Thanks in advance for any help.