linking accounts

I have an EA account which is linked to my Xbox live account since I used to own an Xbox 360. Since I traded it in for a PS4, I cannot seem to link my EA account to my PSN account despite it using the same email address. I have played EA games on my PS4 and I have tried numerous times to link the accounts via the EA website without success. I have logged on to the EA website on my PS4 but it still doesn't link the accounts as far as I can see.

I use the same gamertag for my PSN account as I had on the Xbox.

I have preordered Mass Effect: Andromeda for PS4 and I am worried that I won't be able to use the N7HQ because it requires you to use an EA account which is linked to your console profile.

I don't care about my old Xbox live account being connected to my EA account anymore, I just want the PSN account to be linked ASAP...

Please help!!!