Hello shaktitax,

Welcome to the Community. It's important you're able to use the program without running into issues. I'll be glad to share more info so you're on the right track.

I suspect you may be experiencing system issues that are causing the issue you've described. In order to troubleshoot this issue, I recommend using the QuickBooks Tool Hub. The QuickBooks Tool Hub is designed to help fix issues such as the one you've described above. Feel free to check out this article here that shows you how to effectively use the Tool Hub to your advantage.

 Let me know how you make out. I'll be a message away in case you need further assistance.

It is working with : My business account" but it not working when we upload T4s using " Rep a client" 

Hi shaktitax,

Thanks for getting back to us on this thread. Based on what you've described, I encourage you to reach to our customer support team. They'll be able to verify your account details in a secure setting to assist you further. You can review this article to contact our customer support team.

Let me know if you have questions, I'll be happy to help.