I really don't see this as an RSC issue, more of a Steam issue. I gifted a friend a RW release then bought two shooter bundles for my self this last weekend, he got his stuff downloaded fast, I'm still missing completely one game bundle, but was charged for it already.
RSC has nothing to do with when Steam puts the stuff out for release, let alone when Steam servers get slammed during a big sale. And, yes, seems everyone but me had a four day weekend. Don't expect a reply from RSC soon. Plus, they will just tell you to contact Steam.

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