SmartMix.io == TOTAL SCAM.... STAY AWAY.

Scammer allows user's first Tx to go through.... Then steals user's BTC on subsequent Tx.

User's first Tx will typically be a small amount to test the service to see if it's a scam.  The SmartMix.io scammer processes the small test Txs to make the service appear legit, but then steals the BTC sent via any subsequent Tx, which is typically larger than the initial test Tx.  Scammer ignores all contact attempts.  Support form on website is meaningless.

SmartMix.io is a COMPLETE SCAM.  STAY AWAY.