I am using succesfully GMI (gmi-mr.com), GTM - Global Test Market.

They will redirect their respondents to your Limesurvey survey as following:


1) You provide them your surveylink and sid where you save their panel ID:

www.yourdomain.com/limesurvey/index.php?sid=48529&48529X3X140=[access_code]&newtest=Y&lang=en

Where [access_code] is their panel ID.
I save that ID in a hidden question sid=48529&48529X3X140


2) They will provide you also the redirect links to their system


For completes:
globaltestmarket.com/20/survey/finished.phtml?ac={INSERTANS:48529X3X140}&sn=XXX&lang=E

ac is their access_code again, you have saved their panel ID already in 48529X3X140 so you will send that value back in their end link. sn=XXX is their studynumber for your project, they will deliver you that ID.

For screeners:
globaltestmarket.com/20/survey/finished....&sn=XXX&lang=E&sco=s

For quotafull:
globaltestmarket.com/20/survey/finished....&sn=XXX&lang=E&sco=o


Because LS doens't have screener exits, I mean if a particular answer is exit, you need to create a quota with quota limit 0.
And you add in there the autoload URL with the link for screeners.

For any other quota you built add the autoload URL with the link for quotafull.

For completes, you first put on the setting "Automatically load URL when survey complete" at the General settings.

And in the "edit survey text elements" at "end url" you enter the link for completes.