I'm looking to render Yodlee Fastlink in an iframe on a rails app and encountering issues similar to those in the question here, which don't seem to have been fully addressed in responses.
I have closely followed the instructions in the Yodlee Fastlink guide, and successfully obtained the rsession token and token from the rsession call, but when trying to invoke the Fastlink iFrame ruing the app locally, in posting to the Fastlink launch endpoint 'https: //node.developer.yodlee.com/authenticate/restserver/' with all the correct parameters (including the aggregation finAppId) I receive a 302 error response, with a redirect to https: //node.developer.yodlee.com/apperror.
Also, when I've tried posting using the form described here: Fastlink Landing page is not getting rendered with all the correct parameters I receive a vague 'Technical Difficulties with error code' error response, which I don't know how to troubleshoot.
Can someone from the Yodlee team or someone with experience embedding a Fastlink iFrame offer any suggestions on steps to fix these errors and successfully render a Fastlink iFrame?