CalDav stopped working

CalDav stopped working

Hello,

I have been using CalDav for syncing my CRM calendar with my outlook and iphone calendars. About 3 months or so ago it stopped syncing. I have not changed anything. I have tried to reinstall but I cannot get it to work. I really rely on this as my scheduled meetings are automatically put onto my iphone calendar, which is key to keeping me organised.

Please help!