Glad to see you here in the Community, @Deesyb.

Allow me to provide additional information about importing bank transactions in QuickBooks Desktop (QBDT).

QBDT only supports .QBO file when importing bank transactions. If your bank can't download the said file, you'll have to convert it first. This way, you can import your transactions seamlessly. To find a file converter, you can go to our QuickBooks App Store.

After converting the file to .QBO, you can now proceed with importing bank transactions in QBDT. For more guidance, feel free to check out this article: Import Web Connect (.qbo) files.

Once everything is set, and you're ready to reconcile your bank account, you can read through this article for the detailed instruction: Reconcile an account in QuickBooks Desktop. Reconciling account make sure your QuickBooks transactions match your real-life bank statements.

Should you need any additional assistance while importing your bank transactions, you can leave a comment below. I'll be sure to get back to you.