Shop page issue with All in one SEO plugin

Hi everyone,

Base thread is this one: https://wordpress.org/support/topic/shop-page-issue-with-all-in-one-seo-plugin?replies=12

Problematic page is here: http://namaki.fr/maquillage-enfant-bio/
I have the very last SEO all-in-one plugin (2.1.4) and this problem still exists.

MalteseFalcon uses a beautiful solution described in the thread but it’s not working for me. I’ve tried to upload an alternative header.php file with different names header-shop.php, header-maquillage-enfant-bio.php, header-boutique.php (french translation for “shop”) to no avail … Any help would be greatly appreciated.

Furthermore astreetweb quotes

You can set the “Shop” page title tag by putting the text you want in “Archive Title Format:” on All In One SEO settings page.

However there is no longer Archive Title Format in 2.1.4 All-In-One SEO plugin settings page.

So I am stuck I cannot edit title or meta tag for this page which greatly impacts my SEO. Any help?

Thanks!