Hey, Chlobott. What's the exact error message you’re getting? Importing from Navy Federal can be tricky because QuickBooks has specific requirements for CSV headers and special characters.
In the meantime, please ensure that the columns for Date, Description, and Amount are in the correct format, as this will help resolve any issues with importing. You can find a quick guide on how to prepare your file here: Format CSV Files for QuickBooks.
Once you access the guide, you can choose between a 3-column or 4-column format to successfully import your transactions into QuickBooks.
Feel free to reply to this post for further assistance.