I love this! "Login unsuccessful. Something went wrong: Error: api_calls exceeding plan authorized calls" when I went to log in with Twitter. Good problem for you to have, I look forward to you working this out so I can participate.
Honestly, I only signed up for Twitter to join Product Hunt. That was a huge disappointment when I found out that having an account didn't mean anything. This will be a pleasant change, it's about time.
They rely on OAuth.io [0] for something trivial as Twitter auth. I'm disappointed! The limits of the free service of OAuth.io [1] are ridiculously low, too.
Not defending it, but at the time they launched being able to seed from your Twitter social graph was a jetpack for improving the quality of experience, and vital to building relevant notifications on day 1.
Honestly, I only signed up for Twitter to join Product Hunt. That was a huge disappointment when I found out that having an account didn't mean anything. This will be a pleasant change, it's about time.