Necesito subir mis extractos bancarios por favor puede atenderme ?

It's my priority to help you get back on track with uploading your bank statements in QuickBooks Online (QBO), fjcasanova67.

Did you receive any error messages when performing the activity within the program? Any information will guide me in providing appropriate information. 

In the meantime, let's perform some troubleshooting steps to determine if it's a browser-related issue. The system occasionally behaves weirdly when the browser is full of out-of-date pages. To begin, log into your account in an incognito window, then upload the bank statement again. Use the keyboard shortcuts listed below:

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

If it's successful, switch back to your default browser and delete the cache to start over. If not, you can optimize your QBO performance using a different browser that is compatible with it.

Check out these articles for managing bank transactions within the program:

• Categorise online bank transactions in QuickBooks Online
• Set up bank rules to categorise online banking transactions in QuickBooks Online 

If I can be of any additional assistance with other banking-related activities, kindly insert a comment below. I'm available around the clock to provide appropriate information. Stay safe.

Note: I utilized a Google translator to convert the response into Spanish. The original answer is in the English language.