iOS - I'm trying to save my appointment, but keep getting an error

Issue

I will click on the link to add the event to my calendar, Vida app will say that it does not have access to my calendar and to give it permission, but Vida does not show under the Calendar section of the settings, there is no record of Vida requesting access to the calendar, and the Vida app settings do not have a setting to request access to the calendar.

Answer

This is an issue if some privacy settings are enabled, those options will not be available at all, nor will iOS register that an app has requested access to other apps or resources - such as Calendar.

Please make sure to check your privacy settings on your iOS device to allow access to your calendar.