If you previously signed in to Haystack using LinkedIn, you can sign in again by using the same email address that you use to sign in to LinkedIn:
Tap 'Have an account? Sign in
In the 'Email' section, type in the email address you used to sign in to LinkedIn
In the 'Password' section, type in your Haystack password or reset it
Note: You can find your LinkedIn email by going to LinkedIn and clicking on 'Privacy and Settings' in your profile.