To be able to connect the Instagram Feed Module to your Instagram account, you will need to have an Access Token.
Create a Facebook App
Log in to your Facebook account and navigate to the Facebook Developers page.
Click the Create App button.
Fill in the app's name and fill in the App Contact Email address
Click the Next button.
In the Filter by sidebar, click Content Management, select Manage messaging & content on Instagram, and click Next.
Select your Profile name and click Next.
In the Requirements page, click Next.
Click Create app.
Enter your Facebook user's password and click Submit.
Click the Customize the Manage messaging & content on Instagram use case.
Click the Permissions and Features.
Scroll down and for the instagram_basic, click the + Add button.
From the left sidebar, choose App Roles → Roles.
Click on the Instagram Testers tab and then click on the Add People button.
Choose the Instagram Tester option, enter your Instagram username, and click the Add button.
Click the Apps and Websites link.
A new browser window will open and ask you to log in to your Instagram account, or if you are already logged in, it will redirect you to the Instagram Apps and websites page.
Click on the Tester Invites tab.
Click the Accept button.
Go back to your Facebook App page and refresh the App roles page. The Tester account should not be in Pending mode anymore.
From the left sidebar, choose Use Cases and click on the Manage messaging & content on Instagram → Customize button.
Extend the Generate access token option and click the Generate token option.
Click the Allow all cookies option.
Log in to your Instagram account. This should be the same Instagram account that was added as an Instagram Tester account (step 13).
Click the Allow button.
Go back to your Facebook app page/tab, check the I understand option, and click the Copy button to copy the access token to your clipboard.
Finally, click the Done button.
Use the Access token in the Instagram Feed Module
Add or open the Instagram Feed Module.
In the Content Tab → Account, click the Add button.
Fill in the Account name - this can be anything you want.
Paste in the Instagram Access token from step 24.
Click the Submit button.
