For you to publish to Instagram, you account needs to be a Professional account.
Instagram does not support automatic posting to personal accounts.
You can convert your personal account into a professional one, see our article titled "Converting your Instagram to a Professional Account" for information on how to do this.
You also need to make sure that your Facebook account is linked to Instagram. You can see how to do this in our article:
Connecting your Facebook account to your Instagram profile
For any support questions please email support@therealestatevoice.com.au.