Hello, @antongschaffer,
I see, Thanks for the detailed explanation. By default, as you know there are no options to collapse the first tab. But it can be done with a trick. First of all, you have to duplicate the first tab and then hide the first tab with the CSS code by doing this all the tabs will collapse when the page loads/opens. If you find trouble dealing with it simply share your site admin login details with your site link in the private content area of this topic I will check and make the necessary adjustments for you.
Best Regards,
PThemes Team.
