Hello,
i'd love to offer you my prestashop skills.
I can help you fix your issue with mixd content. You don't need to be worried that i will affect your customers by my work. This kind of fix is pretty safe.
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I work daily with prestashop over 5 years. I know prestashop from top to bottom. I am familiar with every aspect of this eshop system. From adding simple features, theme modifications, creating custom prestashop modules to overriding core files and connecting prestashop to various API's.
Thank you for your time.
Kind Regards,
Jarda Nalezny