Can't link steam account

Hey there, 

Are you getting any error messages when trying to link your Steam account? In case you need it, here's an article with a guide on how to link accounts: Linking your platform accounts to your EA Account

I think its because I unlinked old account and linked new one  with PSN

Please note that when you link accounts, it creates a lifetime link to protect you from malicious activity and help prevent performance issues in your games.

You can unlink your platform accounts from your EA Account if you want to link them to a different EA Account, as long as that EA Account has never had the same account type linked to it before in its lifetime.

That means if you unlink an Xbox gamertag from your EA Account, you can’t link a different Xbox gamertag to it in the future.

So i can't get my items back?

As we can't check your account here in the EA Forums, I wouldn't be able to give you an exact answer regarding your missing content. If you require further assistance with your account, please contact EA Help Support.