Unfortunately, the Instagram app doesn’t support the possibility of displaying IGTV posts through third-party services yet. In the meantime, a temporary solution has been put in place to stop this error from happening. Please follow the instructions below:

• Update the Content Office app to the latest available version (You could check Content Office latest update trough App Store search);
• Add a new empty post to your feed.
• Select the new post → Tap ‘Pin.’
• Open Instagram → Copy IGTV post’s link.
• Open Content Office → Tap ‘Paste’.

Pin feature is available to all users without restrictions and is suitable for all types of Instagram accounts.