We appreciate your effort and patience in resolving your duplicate concern, info-acoustical. I'm here to provide further details.

To further narrow down your concern, can you clarify where exactly you are seeing duplicate transactions? Attaching a screenshot is much appreciated.

As mentioned by Ivan_G, if you're on the banking page, the option to return to the data from a few days ago is by excluding the transactions.

For now, please access your QuickBooks in a private or incognito browser window to access it in a clean slate since the error message you receive may be a cause of browser incompatibility. Please use these keyboard shortcuts: 

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N

Additionally, you can match bank transactions with the correct accounts in QuickBooks to avoid duplicates.

Please return to this thread for further assistance with your duplicate transactions. We're waiting for your response.