It only seems possible to insert the default Email Preference Center Page through HML. In the classic Pardot email template builder it was possible to insert a specific custom EPC page when inserting the link. I would need this for a customer active in 2 languages where there are separate custom EPC pages (with public lists) per language.
Sorry for the inconvenience. In case you don't receive a response here, may I also suggest joining the Pardot group below to collaborate with the experts for best practice and advice.