“So @ProtonMail received a legal request from Europol through Swiss authorities to provide information about Youth for Climate action in Paris, they provided the IP address and information on the type of device used to the police https://t.co/KtKF4wn3wv”
One shouldn’t expect otherwise. See also https://web.archive.org/web/20210719011623/https://privacy-watchdog.io/truth-about-protonmail/.