I'll help you download the WebConnect file, Mtnonline.

You can start the process by opening the file. Choose an application to open .qbo to a text file. Then, edit it.

Once done, you can download it inside QuickBooks. 

I'll also include the article on how to fix Web Connect import errors for future reference.

Feel free to get back to this thread if you need more help with importing the file. We're just around.