Thank you for posting here in the Community. Allow me to step in and help provide information about unsupported QuickBooks Desktop version.
If you're using the QuickBooks Desktop 2016 version, the access to add-on services will be only until May 31, 2019. Please note that uploading of transactions using a QBO file from your bank will also be unavailable.
For more insights on what will happen to discontinued QuickBooks Desktop, I'm adding the article I recommend on this (scroll down to What are the affected 2016 services?):
The only option you can try is importing transactions using the IIF file format. I'm adding an article below for the available data you can import, and it includes the detailed steps as well:
You can keep in touch with me here should you have further questions. The Community always has your back.