Hello, djeasterbrook.
For the time being, there are no reported issues with the unresponsive reconcile button in QuickBooks Online (QBO). I'll help you fix this to keep you going with your task.
When clicking a button or link doesn't result in any action, it indicates that pop-up windows are being blocked. Please note that troubleshooting steps may differ based on your browser and its version.
If you're using Google Chrome, follow these steps to check for pop-up blockers:
If you're using Firefox (Windows or Mac) or Safari browsers, please see this article to guide you with the complete troubleshooting steps: Why doesn't anything happen when I select a button or link?.
Once the issue is fixed, continue with the reconciliation process.
Additionally, you may want to use this guide to further help you in doing or fixing reconciliations in QBO: Learn the reconcile workflow in QuickBooks.
Please keep me posted in the comments if you have other system performance concerns or questions about reconciling accounts in QBO. I'll gladly help.
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