Your ICS file is unable to update.BEGIN:VCALENDAR
PRODID:ICS Calendar for Wordpress (fullimpact.net)
BEGIN:VEVENT
DTSTART:20130531T160000Z
DTEND:20130531T190000Z
DTSTAMP:20260408T002731Z
UID:glsd7p9v5oj43qpc258ikqdq6c@google.com
CREATED:20120918T181249Z
LAST-MODIFIED:20221105T023614Z
SEQUENCE:0
STATUS:CONFIRMED
SUMMARY:Open Coffee Athens @Benaki
TRANSP:OPAQUE
END:VEVENT
END:VCALENDAR