Hey Koopa_Jayy,
Just to clarify what seems to be a bit of confusion here, progress cannot be moved between different accounts.
Progress is stored on the EA account level, not on individual platforms like PlayStation, Xbox, Steam, etc. This means if you link your platform to a different EA account, you'll lose access to that progress and it will appear to have reset.
If you had a PSN account linked to one EA account and a Steam linked to another EA account, you'll have two separate sets of progress - this would be the EA accounts, not your PSN/Steam accounts. Linking your PSN to the same EA account as your Steam simply means you'll be able to access the progress on this second EA account with both Steam and PSN now. It will not transfer content from a different account, I'm afraid.
We are not able to make any changes to your account status or progress via the forums, but if something was linked or unlinked incorrectly it may be worth contacting support to see if the original platform can be re-linked.