Hmm, I think the issue here is that there are different servers providing the Forums and the main website. In the URL of the forums, it shows psvitahub.forumotions.com. This means the forums are a free subdomain from Forumotions - a forum hosting service.
If you look at the main site, the URL is just psvitahub.com. Note the lack of ".forumotions." This means the forum and the website are being hosted via different methods. If Snake would to disconnect this forum and instal, say, a phpBB3 forum onto the main website, they'd be hosted by the same service. This would allow account integration between the main website and the forums, plus the forums could be edited any way Snake pleases. Right now... I think the only thing Snake can change on the forums is the CSS, but I'm not sure.
I know account integration is possible, but I don't know PHP so I can't do it myself.