I hope you are well today and thank you for your question.
The portfolio header is set in the portfolio page header settings as shown in the attached screenshot.
Could you please share me the page URL from your site where it is not displaying correctly so that i can troubleshoot it?
In the Theme Options -> Header section:
In the header-mobile.php (for the mobile language switch – which didn’t work before):
btw after activating WPML the language switch option on the Header section came visible..
Would you mind if i log in to your site and do some troubleshooting? If this is ok then could you please share me your site log in details privately by adding them in the box having text “Click here to share private content. Only you and forum moderators will bee able see it.”?