If you are trying to connect you personal profile and can't see it when you try to connect The Real Estate Voice platform to Facebook, that's because Facebook does not permit you to promote anything on your personal profile. You need to post to a Business page.
Your profile represents your personal life and if you want to promote any kind of business, then you need to have a business page.
If your brand as an agent is built on your personal Facebook profile, then you should think about changing to a business page.
For more information about a personal account and business page on Facebook, visit https://www.facebook.com/help/337881706729661/
For any support questions please email support@therealestatevoice.com.au.