Hello, Jeremy. System glitches, cached browser data, or outdated browser settings are common reasons behind the cannot schedule payment now error you've encountered in QuickBooks Online (QBO).
To fix, we can start by logging in with incognito mode to see if it resolves the issue. If not, restarting your browser can refresh cached files and apply any pending updates. Using other supported browsers can also enhance security and performance within QBO.
If the issue persists even after taking these steps, you may want to consider contacting our Live Support team. They have the tools to securely access your account and take a closer look to further investigate this unusual behaviour to resolve the error.
Should you still have any other inquiries, feel free to reply to this post.