If you visit the Wantedly post you wish to embed, there is an 'Embed' button above the top photo on the right side of the page.
Clicking this button will display a piece of code. By incorporating this code into your own website you can embed the Wantedly post into your site. The embedded portion will contain the title, top photo, company name, logo, 'See More' button.
If you are still having trouble, contact Wantedly Customer Relations Team from here!
Sorry for the inconvenience :(