We have just federated Server and Portal and add a DataStore. We are running Server and Portal 10.4.0. We when try to add Portal to Survey123, we get "Survey123 requires that Portal for ArcGIS 10.3.1 or later and is configured with a hosted server and argis datastore. Error. I see that several have had this issue in the past but cannot find an answer or out come posted.
Does anyone have tips or answers? Still waiting for Tech line to call back, thought I would try here while I wait.