https://www.cnet.com/news/telegram-says-apple-has-been-halting-its-app-updates-worldwide-following-russian-ban/

Telegram updates have been blocked by Apple since April when Russia banned the encrypted messaging app, the company's CEO said Thursday.

Pavel Durov, who co-founded Telegram with his brother Nikolai Durov in 2013, said that Apple sided with Russia after the company refused to provide decryption keys for users' communications to the country's security agencies.