No worries! I purchase everything on American Express for this reason. Cheap insurance for cases like this. Your product does ship with DRM and license keys can be revoked server side which will prevent reinstallation and update.
As far as hostility goes... to a point I get it, however you aren't looking at this from a customer stand point. I work in public safety so I get the whole "stupid question" side as well as appealing to unreasonable people. The issue I have and have seen repeated by other customers is more from a standpoint of "why can't we have a hot fix for this small issue, t