There should be a way, though I'm new to the website too! I'll look into it, likely should be able to press the locked out content or somewhere else to do so. If not, message me again once it's out and I'll find a way to get you the Director's Cut :)
it is apparently impossible to upgrade without buying again at full price, i sent a request for a refund yesterday morning, so i can buy it again, but i have yet to get a response
got the refund and payed the 15 dollars, sorry i made such a big deal about this, i need to save as much money as i can to afford the vore art i commission