How to remove restrictions on 18+ content in Telegram for iOS and macOS?
29 October
Due to restrictions from Apple, Telegram clients for iOS and macOS until recently did not display Telegram channels with 18+ content.
They could not be found through search, and when following a direct link, a placeholder appeared on the display stating that this channel was used to distribute "adult" content, therefore it was unavailable.
However, Telegram recently introduced the ability to remove this restriction. To do this, you will need Telegram (for macOS), Telegram Desktop (for macOS or web version Telegram. In the case of macOS, it is important that the current version of the application is downloaded from the official Telegram website, and not from the Mac App Store (you will need a VPN to download from Russia).
In any of these versions, under Settings — Privacy, there is now a "Sensitive Content" item and a "Turn off restrictions" switch.
Once you activate it in one of the clients, the setting is automatically synced with your other applications, including the iOS version and macOS versions from the App Store. As a result, "18+" content will start to be displayed. However, it is worth keeping in mind that you still won't be able to find "18+" channels through search — you can only access them via a direct link or invitation.