Excel Add-in test run export stops after first test case

Dear Helpdesk,

I can import my assigned test set into Excel and set Status and Actual Result. After I click on Export and wait for the gauge to fill an empty error message shows up. In SpiraTest I can see that the first of my test cases got imported into a test run along with the specified Status and Actual Result but the rest of the test cases did not. It does not matter which of my test cases comes first, it always stops after it and presents the empty error message. Am I missing something here? Let me know if there is solution.

Best regards,
Sandor

https://ibb.co/fQNUsd

https://ibb.co/nBnUsd