Hi all,
I just wanted to bring attention to this problematic experienced by some users of Aggregate, related to Google's deprecation of OpenID login.
That is causing some problems for authentication for pretty all new users using google emails as a sign-in. Already registered applications and users are fine, but no new ones will work.
I am not developer, therefore all I can do is bring the issue to the community's attention. There is currently a work-around although it remains to be seen if it will work on Google's App Engine as well.
There is more info from user's perspective:
https://groups.google.com/forum/#!topic/opendatakit/WzaM8F6yDZQ
https://groups.google.com/forum/#!msg/opendatakit/ZfwyliI8WQ0/V0JOF1I25OkJ
For some who might not have seen it here's google path for migration and more technical background on the topic: