Steps To Add ‘Contact Button’ In Instagram:
1. Click the gear icon on the top right of your homepage.
2. Now, click on “Switch to Business Profile” underneath the “Account” section. (if its not already business account)
3. Now, connect your Instagram account to your Facebook page. You will be prompted to connect your Facebook page to your Instagram profile.
Click ‘continue’ to connect your Facebook page. Once connected, you will be shown a list of Facebook pages that you have admin access for. Choose the correct page, and tap on continue.