Calendar issue - different people, different info shown

HELP! Is anyone still having a problems with their calendars? We have 6 different people in our office, all linked to the same group calendar, but each person sees a different amount of information. This Thursday, for example: I see only 3 events, one of my co-workers sees 4, another sees 6-7 (because we kept adding an event when the site had issues, but now the people that added them can't delete them because they still cannot see them!), and so on. Clearing our caches/cookies/etc. has not helped the issue. I'm presuming this has to do with the recent DDOS and related updates.

This site was recommended to us for it's accessibility, user-friendliness, and variety of uses. However, this is the second time in the last three weeks that we've had trouble, and we are losing confidence in Zoho. We RELY on our calendar to keep our office organized, and it's failed miserably as of late. We literally had a surprise appointment show up today, and we are guessing it's because they were one of the events that didn't record properly when there were problems a few weeks ago.

Maybe it's just us, but hopefully, if there are more of you out there with the same issues, speaking up and bringing more attention to it will help resolve it faster.