Nowhere in the campaign did it say that I couldn't add on physical items if I pledged for the PDF level. I had assumed that I could add on any of the add-on items after the campaign, but backerkit is saying that the campaign has been set to only allow physical items on one of the pledge levels that include physical items. Is this intended, or was there some mixup? If not, then that seems somewhat disingenuous as if I add on all the items I don't already have, I'm left with $50 unspent and unspendable other than buying community copies of items...