Was about to order a batch of 5 for local resell but the site seems unable to process the Bitcoin payment. Too bad.

I experienced same thing yesterday and I emailed him without reply yet
I answer you yesterday

There is some problems with blockchain.info API (I checked plugin sources and bc.info spec and its seem to be right, but problem witch API still remains

).
I don't know that bc.info change some thing or wtf, its just happened from day to day after couple months of non problem working (if some one have some information about this issue PM me please).
Because of that I switch some plugin settings and now
Bitcoin payment gateway is UP again with before properties = Bitstamp rate -discount %

Please be aware that some time your payed order status will not change even after 6+ confirmation, that can be normal because of this bc.info API problems.
Every day before shipping we will check all Bitcoin orders status to confirm payment and send them ASAP.
Thanks for understanding!