calendars are absolute garbage, but i think:

• why the hell doesn’t proton calendar support activesync? that’s like… one of the most basic requirements of a calendar service

• he’s expecting things to work in a particular way and that’s not really how this works. i have fastmail, icloud, and multiple google calendar accounts added to my iPhone and MacOS calendars directly and that all works great - i think an aggregator would be great, but at some point you gotta stop pursuing a path that just isn’t working