I was gifted the standard edition of witch queen on steam a few weeks back, however it would cost me more money to pay for the seasons and the 30th anniversary pass now that I have the standard edition. Is there anyway to simply just upgrade editions and not have to buy everything separately now?
As far as I'm aware there is no way to upgrade an existing pre-order. The normal process would be to just cancel the existing pre-order, then order the version you want to get. Of course you can contact the platform store your gift is from to see if they offer an upgrade path. If not then your only choice is the cancel and replace I mentioned.