Carlw1986 wrote:
I’ve tried restoring calendar on iCloud and still the same , any suggestions would be much appreciated.
What do you mean by still the same after restore of calendar from iCloud? (1) Did those events got restored only to latter go back missing again? (2) Or when you tried to restore it nothing did come back?
If (1), it sounds as some account issue and you probably will need to contact Apple for help to resolve account issue.
If (2), and nothing got restored then perhaps, beside iCloud, you have other accounts too that you use with Calendar app that is having connection issue. Go to Settings > Calendar > Accounts, and see what accounts are listed and if on all calendar option is enabled.