I can understand how challenging this must be, @jjc-king, especially with the pressure of a BAS submission deadline. Being redirected to the login screen after a feature rollout can be frustrating and might indicate browser-related issues.

On the bright side, since the Reports button works, your login appears to be working, though the Complete BAS flow seems to be unstable.

To verify if this is a browser-related issue, refresh your web browser to ensure you’re viewing the most up-to-date information.

Additionally, log out of QuickBooks and log back in to reset your session with the server. Once you’ve done that, please resubmit your BAS.

If the steps above don’t resolve the issue, log in through a Private or Incognito browser window. Doing this will bypass any cache conflicts or interfering browser extensions that could be destabilising the QuickBooks connection.

Here are the keyboard shortcuts to open private/incognito mode on your browser:

• Chrome (Win/Linux): Ctrl+Shift+N • Mac: ⌘⇧N
• Edge: Ctrl+Shift+N • Mac: ⌘⇧N
• Firefox: Ctrl+Shift+P • Mac: ⌘⇧P
• Safari (Mac): ⌘⇧N
• Internet Explorer (legacy): Ctrl+Shift+P (Prefer Edge IE Mode if applicable)

Alternatively, you can switch to a supported browser to ensure full compatibility with QuickBooks and uninterrupted functionality.

You can always return here if you have additional questions or need assistance in using QuickBooks by leaving a comment below.