If you can't get the setup link to work or you don't have email on your phone, you can set a password on your account and use that to log in to the Openpath app.
To set up a password please follow these steps:
Click Forgot Password
Enter the email address from 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
Close the Browser
Now 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.