the dev has clearly implied that he's busy and under the pump with coding, im not quite sure he has the the time to reply to a few hundred people inboxing about the same twitter distribution, in my opinion he has been rather open & clear about his intententions and future with zeth, updates almost daily, and answering most questions publically.
Be positive about your investment dont haggle and whine because you dont see instant results after buying in, i understand there has been alot of scams (matchpool) but you cant just label everything a scam because your worried, crypto is a gamble.
To date Ben has not broken any promises or missed any deadlines, so in my books its still a solid investment.