Before you begin

Prior to establishing a chatbot, confirm that you have:

A professional Instagram account (either a Creator or Business account).
A Facebook Page that is connected to that Instagram account.
Enabled Allow access to Instagram messages in Inbox for your Instagram account.
Registered as a "Facebook Developer" on the Facebook Developers Portal.

Converting your profile to a professional account

Go to your Instagram profile and tap the hamburger icon (three short horizontal lines stacked on top of each other).
- The icon is present in the top right-hand corner for the mobile version of Instagram.
- The icon is present at the bottom of the navigation sidebar on the left for the web version.
Tap Settings.
Tap Account.
Tap Switch to professional account.
- For some accounts, the Switch to professional account option will be listed directly under Settings.
Tap Continue.
Select a category for your account and tap Done.
Tap OK to confirm.
Tap Business or Creator.
Tap Next.
Add contact details and tap Next. Or tap Don't use my contact info to skip this step.
Tap X in the top-right corner to return to your profile.

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Source: https://www.facebook.com/business/help/502981923235522

Log in to Facebook, then click your profile photo in the top right.
Click See all profiles, then select the Page that you want to switch into.
Click your Page's profile picture in the top right of Facebook.
Click Settings and privacy, then click Settings.
Under Permissions, click Linked accounts.
Next to Instagram, click View.
Click Connect account, then follow the steps to connect your Facebook Page and Instagram account.
Please ensure that Allow access to Instagram messages in Inbox is enabled in the process.

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Source: https://www.facebook.com/business/help/connect-instagram-to-page

If you haven't already done this while connecting your Facebook Page:

Open the Instagram app on your mobile device and log in to your business (Professional) account.
Go to your profile and tap the hamburger icon in the top right.
Select Messages and story replies.
Select Message controls.
Under Connected tools, you can toggle on Allow access to messages.

While logged into your Facebook account, go to the Facebook for Developers website and click Get Started.
Agree to the Terms and Conditions.
Verify your account using a confirmation code sent to the phone number and email address.
Select your occupation. You are now registered as a Facebook Developer.