Thanks for joining the thread, @kandyjk. Let's work this out so you can proceed to finish your reconciliation in QuickBooks Online (QBO) Us.

Before we proceed, can you tell me more about your concern? Did you receive any error promptly after you've manually unreconciled a transaction? This way, I'll be able to provide you with a suitable resolution to your concern.

Don't hesitate to leave a comment below. I'll make sure to get back to you as soon as possible. Stay safe!