I have premium stash tab in PoE2 but not avaiable in PoE1

Hi there, could you please ensure you're signed in to the correct sub-account when attempting to play on both games? You should be able to change this on the character selection screen. Please note that microtransactions are not shared between sub-accounts. If this issue persists, please feel free to contact us at support@grindinggear.com so we can look into this further for you.