Hi,I'm in Canada, however, I can't seem to collect online card payments from US and Uk costomers?Anyone have the same problem?

Currently, QuickBooks Payments does not support accepting payments from international customers, @mviens. Let me provide you with more information about this.
 

This is outlined in our Merchant Agreement and Acceptable Use Policy. Specifically, Section 2 of the Merchant Agreement highlights that the service is available only in Canada and specifies the accepted payment networks, which include VISA, MasterCard, Discover, and Apple Pay.
 

You may consider using third-party applications that support international payments and can be integrated with QuickBooks.
 

Here's how:
 

1. Navigate to the Apps menu.
2. Click on the Find apps section.
3. Use the Search bar to look for a specific app, or explore options using the Browse categories and Browse industries dropdown menus.
   
   
    
4. Follow the on-screen instructions to install the app.
    

In addition, check out this resource: Record invoice payments in QuickBooks Online. This guide provides detailed instructions on how to record sales transactions using two different methods.
 

If you have any more questions or need further clarification about processing payments in QuickBooks, feel free to reach out. I'm here to help and ensure you have a smooth experience. Take care and have a great day!