The locked tokens only seem to be for credit card purchasers. The six month lock was made known to them before they purchased, a fact that many conveniently ignored. Other locked tokens are those to do with the bonus referral system. Those will become available after the PWC audit is completed. My ICO tokens were never locked.

The communication issue has been very bad as of March. they are well aware of it, but are obviously not prioritising it. It is really annoying me and is my only real Envion gripe at the moment. I speculated on it and the possible cause of it in this post: https://steemit.com/cryptocurrency/@bitbrain/crypto-shopping-cart-18-april

Hit BTC isn't great, I'm not clued up about Yobit. But Envion has a bit of a listing problem: it is seen as a security almost everywhere - it's designed to pay dividends more than anything else. This makes it complicated from a regulatory perspective, and exchanges shun it for that reason.

I trade Envion through IDEX. The volume isn't fantastic, but it's high enough not to be disadvantaged. IDEX is decentralised so you don't have to worry about it being dodgy. Envion itself is not a scam token. You can even look up it's German and American regulation applications with the SEC and it's German counterpart, or the company registration in Switzerland.

Thanks for the comments.