Passport Ultra not recognised on Mac

Hi, bought brand new yesterday. Light continuously flashes but can’t find in MAC HD, install won’t complete - can’t copy paste to WD. Any idea’s? Thanks
Error message
The following +TURBO drivers were missing after the install:
It will not be possible to complete the install


Try installing the Turbo drivers.

WD Macintosh +TURBO Drivers


I tried several times but get same error message which I copied below. I
tried to format in HD but its not visible either


I recommend you contact WD Support for assistance with this.