Hey lupritive,
Is it possible you have another email or EA account that may have been used in the past? While this may be the same PSN account you've played on previously, it looks like your recent login was the first time Apex has ever been launched on PlayStation using the EA account you're posting with now. Since you've got so many hours on Apex, that must have been linked to a different EA account previously.
It also looks like the PC progress is fairly recent, towards the end of last year being the first time Apex was played on PC from this EA account. That may be normal as you've mentioned switching to PC, but this EA account in general has had very little Apex activity as a result.
I'd try logging into the EA website with any other emails you may have used in the past to double-check whether another EA account exists. If there's an email you can no longer access or an account you can't recall the login details for, it'd be best to contact support directly so they can try to verify and update the account(s) as needed.
Essentially you will need to try and locate whatever EA account was used in the past and make sure the PSN is linked there instead. The support team should be able to take a look at the links during the process of recovering/updating any older account as well.