The Instagram διέγραψε το κουμπί IGTV που βρισκόταν στην επάνω γωνία της applications, since no one was using it anyway.
The IGTV button was Instagram's response to YouTube, a separate but not real application for longer videos than allowed. The project started in June 2018 with drumbeats, but apparently did not have the luck that its developers expected.
And that's because you can watch IGTV videos without the app. Essentially the button was meant to give users a shortcut to browse IGTV content directly. So it seems that nobody or very few used this button.
Most people search for IGTV content through other channels, such as preview in Feed, or IGTV in Explore, or creator profiles, or even standalone applications. Very few do click to the IGTV icon in the upper right corner of the home screen in the Instagram app.
As reported by Instagram, in their attempt to simplify the platform, they remove this icon based on its non-use and comments from the community.