Hello @pttk  Could you please share more information like how you have set it up and what error do you see on the website?

I configured the tienda.infotecnologia.com site according to the instructions, everything has been checked and the integration simply does not work.

Hello @pttk I don’t see the onsite js for Klaviyo on your website. The form won’t work until the onsite js is added to your website.

But I added the code through the Klaviyo platform itself, it's one click. Now I don't know if I did it.
But WHERE should I add it manually? I use Prestashop 8.1

Thank you

OK, I add code in Index.php >

echo '<script async type="text/javascript" src="https://static.klaviyo.com/onsite/js/klaviyo.js?company_id=XXXXXX"></script>';

Thank