Millisecond Forums

Hi!
I am trying to linking Qualtrics and Inquisit so that participants first complete a survey on Qualtrics and then are automatically directed to Inquisit. I followed the directions reported in this page: https://www.millisecond.com/support/docs/v6/html/howto/interopsurveys.htm , but in the end it does not appear to work.
When I complete the survey in "preview" mode, at the end I am correctly redirected to Inquisit. However then a message appears saying that my test session was already completed and I am unable to take the test. 
Any suggestion on how to solve this issue would be very much appreciated. Thank you!