When you tap on the group, instead of the contents, you see a message like this: https://upload.wikimedia.org/wikipedia/commons/2/2a/Telegram_Messenger_for_iOS

When you tap on the group, instead of the contents, you see a message like this: https://upload.wikimedia.org/wikipedia/commons/2/2a/Telegram_Messenger_for_iOS_blocks_pornographic_content.jpg https://upload.wikimedia.org/wikipedia/commons/2/2a/Telegram... The exact message you see is "Unfortunately, this channel couldn't be displayed on your device.". It doesn't say anything about the app store because apple policies don't allow apps to say that contents are censored because of apple guidelines.