I can not open the car with the digital key ( iOS)

Go to Settings, scroll down to the 'Enterprise GO' app.
Go To 'Locations'.

It is important that you choose : ALWAYS and not select 'When using the app'. This is a temporary fix until we can provide you with the next app update.

iOS location settings  App settings for "Enterprise GO" with location access set to "Always" and "Precise Location" enabled.