I bought the season pass yesterday but I don't have access to all content. My PSN tag is Katzbalger1.
may I ask which DLCs do you have no access to? Please note that there are 2 DLCs which are exceptions - the Servo Skull pet and the Charybdis Outpost mission DLC - these ones were pre-release bonuses for those who pre-ordered the game and as such they were not included in the Season pass.
enter to ps-store via your account and buy for free all available DLCs