...
Click Forgot Password
Enter your email address which you received the Openpath setup email from
Check your email for the Forgot Password email
From that email, click the included link to set a password
Once your browser opens you'll be able to set a password, which will be associated with your email address
Now
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that you have a password set up on your account:
Open the Openpath app on your mobile device
Enter your email address, then tap Next
Tap Use Password Instead
Enter your password, then tap Log in
You should now be logged in; now go open some doors!