submit app to crashlytics

I had the same issue, now solved: Incorrectly merged project did contain our developer's private Fabric/Crashlytics API Key/Secret instead of our Enterprise one.

I have resolved the issue by using correct API key and secret (organizational instead of developers') and discussed this with Mr. Bonnell on Support. The API error should become more explanatory soon. Sorry for not sharing the package name here, it's confidential.

Alex here from Crashlytics. It looks like your app is still in a build state. Before submitting, run it locally first. Give that a try and you should be all set!