The ProtonMail 1.15.11 update for iOS fixes a slew of bugs that users were experiencing. From the version notes: Fixed a bug where push notifications where not received properly. Fixed an occasional bug where swipe actions in the inbox were applied to the wrong message. Fixed an occasional bug where the reply, reply all and forward option did not work on some messages. Fixed an occasional bug during signup where the prompt for captcha was not fully visible. Fixed a bug where contacts migrated through the Proton Easy Switch functionality were not properly displayed. Preparation for upcoming change to exclude embedded images from counting towards attachments. Technical improvements behind the scenes (including updates to the cryptographic library, improvements related to key management and password changes and more).