Why can I see my Cirrux calendar on my iPhone but not add events?

There are two ways a Cirrux calendar ends up on an iPhone, and only one lets you edit:

• Through the Cirrux profile (CalDAV): your calendars sync both ways. You can add, change and delete events.
• As a subscription to a link: you only see the events. This also happens when you set up Cirrux on your Mac first. The Mac profile only sets up that Mac, and a calendar subscription saved in iCloud then appears on your iPhone as a read-only copy.

Fix it

1. On your iPhone, open Cirrux Mail and go to Settings → Mailboxes, pick your mailbox and open the Passwords tab. Tap iOS configuration and install the profile. (From a computer, click iOS set up on the same tab and scan the QR code with your iPhone.)
2. In the Calendar app, remove the old read-only Cirrux calendar so you don't see every event twice. For a subscription, tap Calendars, then the info button next to it, and choose Delete Calendar.
3. When you add an event, check that it goes into a Cirrux calendar and not into iCloud. You can make Cirrux the default under Settings → Calendar → Default Calendar.

Don't see the Passwords tab? Your workspace admin has switched off mail apps outside Cirrux. Ask them to turn it back on.