CalDav provides full access to calendar data (read, edit, delete). Making it work consists of activating the function in the webmail calendar, installing the CalDAV client on your device (optional, as some operating systems have native support) and then configuring it.
In Calendar choose Synchronization in the left menu (1.).
Click on Sync with CalDAV (2.).
Using a checkbox choose a calendar to synchronize (3.)
Copy the URL to paste into the sync client. For iPhone, the main URL (4b) is enough, android devices require you to enter a specific calendar URL (4a).
If the main URL (https://email.forpsi.com/caldav/email_address/) does not work in the CalDAV account on your device, enter the calendar address directly
- eg https://email.forpsi.com/caldav/emailova_adresa/personal
CalDAV client settings in your device