Fydelia requires basic admin access to your site in order to be able to authenticate guest devices on to your network. There is no need for dashboard access, view pending devices, adopt etc. Just basic admin.
To invite an email to be used as an admin account to your site, go to System Settings -> Administration
Click ADD NEW ADMIN
Fill in the required details:
When you receive the email, you will be invited to login and provide a password. Keep the Username and Password safe as you will require this when applying the settings to your splash page