Hi,
I've tried many time to link two surveys following this link .
It partially worked meaning the information I wanted to send from Survey 1 to Survey 2 has sent (you see it the left panel below), but I cannot log in in Survey 2 (you see it in the right panel below). 
Do you have any suggestion what I can try?
Thanks!
Question
longitudinal survey
+18Is your data getting stored in a contact list? The authenticator should be able to locate the ID value in the contact list. Also, you are trying to authenticate using two similar fields which is incorrect.
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