I wouldn't keep up hope on this matter! I'm afraid this is nothing more than an error on BS.Player's website. Of course, as there also is a paid Pro-version of BS.Player, BS.Player's developpers
(please do take due note that I'm personally just a user like you!) have obvious reasons for a short 10s start-up message in Free version.
(Apparently there are quite a few professional users who use Free BS.Player for obvious commercial purposes! Of course those users should use the to-be-paid-for Pro-version.) Most free users only consider it to be a very small nuisance, compared with all what they get
(for free) in Free-version. So, no: I wouldn't expect it to be a bug, that's also why I have never indicated or even given the impression that the appearing of this message could be a bug!