If you are posting in the PC section looking for someone with Playstation access, this would be considered posting in the wrong forum, as a forum for Playstation trades exists.
If you post and look for someone to get the item from someone on PC and give it to you on Playstation, that is considered an illegal trade.
Just wanted to clarify those points real quick.
If someone has access to both, then they can browse the forums for both to initiate trades.
My advice, if you are looking to have changes to this considered, would be to gather all of the fact and create a site suggestion:
https://forums.d2jsp.org/forum.php?f=258