Hello @Tess73 & welcome to ABB CC from across the sea in Auckland, New Zealand
Sorry to read of the challenges you are having with your calendar.
You have done the right thing clearing your cache etc.
There must be an IT Glitch in ABB system with calendars as mine has issues to but with showing an expired Discount Promotion that won't go away no matter how many times I've logged out etc.
@Catherine-Powellwould you please be so Kind to follow up on these issues with your IT Dept and provide us with feedback what's causing these issues & rectify them?
There's a few others also having IT issues that need fixing from what I've seen here the last week or 3 that are on ABB's end to fix the glitches!!
Thanks