Syncing problems: calendar lost forever?

Hello,
not sure which category to put this..

I logged in on owncloud via the owncube webportal and no calendar and contact information was shown there. Very strange - this had worked for many months. Then I tried to create a new calendar just to see if it would sync with my phone: It it but now all I can see is this newly created calendar. My other calendars do not show up on the phone anymore!!! nor on the webbrowser as if they never existed. I really need these calendars, do you think they got erased? What can I do to get them back?

Hi,

please contact the ownCube support about this issue.