Your software keeps crashing when I am working on my bank statement.

I understand you're encountering difficulties with QuickBooks Online (QBO) crashing while you're working on your bank statement, accounting. I'm here to help you resolve this issue. 

To begin, did you encounter an error message when working with your bank statement? It'll help me collect the necessary details and provide you with the appropriate information. 

In the meantime, we can perform some troubleshooting steps to fix this. There are times when the browser is full of frequently accessed page resources, which causes some errors or unusual responses. 

Let's start accessing your account using a different or private browser. You can use either of these shortcut keys:

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

If it works, I recommend clearing your browser's cache. Doing so will remove the historical data and access QuickBooks with a clean slate. You can also switch to a different supported browser.

Once everything's fine, you can categorize the transactions. Here's an article as your guide: Categorize and match online bank transactions in QuickBooks Online.

Please reach out to me here with any additional information on the issue so I can get you taken care of. Thanks for coming to the Community and take care.