Custom dates in date picker

Thanks for the reply - a few things have popped up lately that just seem awkward for e commerce and I’m only a small company with basic needs. Wondering if I should transfer to Shopify?? I’m going to have to find someone to do that for me I think on Wix as I don’t have the know how but I’d need to learn how to update the dates as can’t pay someone each time I need to change something.