I got notifications in my calendar with link that i didn’ set it is countain a caution signs to protect my i phone!
iPhone 11 Pro Max, iOS 14
Question marked as
If running iOS 13 or earlier versions, check: Settings - Passwords & Accounts - Accounts - Any rogue entries here? If so, delete the rogue account.
If running iOS 14, check: Settings - Calendar - Accounts - Any rogue entries here? If so, delete the rogue account.
The Apple support article is below.