If you already purchased the products you should be able to go to the product page and if it's offered you can purchase it from there. You don't need to repurchase the product nor contact the PA. Daz handles support for the PA's so if you can't purchase it through the product page submit a ticket to CS
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If you wan't to contact a PA you are supposed to write a ticket,as part of the agreement between Daz and the PAs is that Daz handles customer support.
But I think both have been active in the forums, and if so you can try to write a PM and see if they reply.
If you already purchased the products you should be able to go to the product page and if it's offered you can purchase it from there. You don't need to repurchase the product nor contact the PA. Daz handles support for the PA's so if you can't purchase it through the product page submit a ticket to CS