I'm trying to sell some riding boots but there is no option to adjust the postage to choose larger packaging, just small and medium. Think I need to choose the simple delivery option, but that isn't even available. I have checked on my PC and on my mobile. The postage area now when selling is really poor, it used to be very easy, and I'm getting to the point where I don't want to try and sell via eBay anymore.
Help! thank you