In order to connect Indeed sources in Funnel, please follow these steps:
Ensure your personal Indeed user account is associated with each Employer Ad Account you want to connect in Funnel.
See How to add users and set access levels (Indeed)
Log in with your Indeed user account via the connect dialogue window in Funnel.
After successfully authenticating, you will see a list of Employer Ad Account sources for all employers that your user account is associated with. Select those employers for which you want to see data in Funnel.