Kindly edit the homepage in WordPress scroll down at the header tab in oceanwp settings section, and make sure to select default header style and try again to select the custom header from the Appearance > Customize > Header > General, and check.
and you have created the template in Theme Panel > My library?
As you said, I had to change the header style on the front page first and then I was able to select the template.
Will have to see how to get what I need.
On Front Page I need it transparent…. but not on the other pages….
Will see how to get this working.