When sending messages in Instagram, errors related to permissions may occur. To fix them, you will need access to your Wazzup personal account and to the Facebook account linked to your Instagram.
This method will help if you received the error: "Message not sent. Update your access settings in Facebook following the instructions."
1. Go to the "Channels" section of your Wazzup personal account.
2. Click "Add channel" and select Instagram.
3. Click "Log In". A new window with Facebook will open.

4. Select a Facebook profile or log in using your username and password.
5. Click "Edit settings".
6. In the next three steps, Facebook will ask you to allow Wazzup access to:
Grant access to all items as shown in the screenshot below.
After selecting the items at each step, click "Continue".

7. A list of required permissions for Wazzup will be displayed → click "Save" → click "Got it".

8. Return to the Wazzup personal account tab. Select the Instagram account for which you need to create a channel and click "Cancel".
Done — you have updated the permissions. Wait a couple of minutes and try sending the message again.