I tried to make an account to post on forums using my email and I got a message saying that I am not allowed to make an account on this site? 

So then I tried to open up a ticket using the same info and it told me I did not pass security check? I did the captcha and verification correctly.

 Could it be that I used the same email on my bdo PC account?  I created a new email and it worked fine  but my PS4 account is linked to my first email. Exact same issue with the BDO app. Can't use my email that I have linked to my account so I had to make a new one. What's going on here?

Ok I figured it out. Still not really sure how but here I am with my of email and linked account.