I cannot cannot import a .qbw, was not created by US version?

Hello again, roger25. Thanks for confirming. 

Right now, the option to import .qbw file directly to QuickBooks Online (QBO) is not possible, You'll need to do it first in QuickBooks Desktop then to QBO.

To help you assist in this process, I'm including some articles below:

• Convert QuickBooks Desktop File To QuickBooks Online
• QuickBooks Desktop Trial Links For US, CA, And UK Users
• Restore A Backup Company File

You might also want to check this link to know what data can be imported or exported: Import and Export Data in QuickBooks Desktop.

Lastly, since you're importing into QuickBooks Online, I suggest the following link which contains tutorials for the software: QuickBooks Tutorials. This can help to ensure that you get the most out of the software for your business. 

Let me know if you have questions or need anything, I'm always here for you. Wishing you a wonderful day ahead!