Merge Fortnite Accounts (Fortnite Battle Royal)?

First of all, I did not buy the Season 3 Battle Pass. But then I played every season and bought the passports. Now I've considered buying an account with Season 3 skins. Now my question: can I if I buy this account (Season 3 - 7), then transfer it to my account? I've already asked on the internet, some say it works and some say it does not work.

As long as it is a ps4 / xbox Acc actually yes. You can't have Os4 and Xbox Acc linked to your account yet.