Katalon stopped reporting status to qTest

Hello Katalon Experts,

I have enabled qTest and Katalon integration and it was reporting execution status to qTest but all of a sudden it stopped working.

Not sure what went wrong. There is no log file to look at. All testcases have link and correct id, as well as test suite.

Katalon Studio Version: 5.6.0

qTest 9.0.0

Can you advise what should be done to troubleshoot it?