On the application page, select “Continue my application” to return to an application you've already started:
By selecting this option, you’ll either be taken directly to your application (if you’re logged in), or you'll be presented with a choice to log in with a guest account or your existing online account with us (if you have one):
Select the option that you used to start the application process, and you’ll be taken to the last step you completed in your existing mortgage application.