We can perform troubleshooting steps to resolve the issue of importing bank transactions via CSV file, @sjoaquin.
Before importing, delete unnecessary columns. QuickBooks required the Date, Description, and Amount columns. Also, match the CSV column names to the QuickBooks tiles.
If you're still unable to import the bank transactions, we can start troubleshooting by clearing your browser's cache to remove the stored data that may have caused the issue.
Click the links below for the detailed steps of different browsers:
Once your transactions are entered into QuickBooks, it's time to match and categorize them. You need to review them before they can be added to your accounts.
Don't hesitate to comment below if you have questions about importing CSV files into QuickBooks Online. We are always here to help.