Bech32 is often a Specific deal with structure made possible by SegWit (begin to see the feature description for SegWit for more info). This deal with structure is generally known as 'bc1 addresses'. Some bitcoin wallets and services usually do not but support sending or getting to Bech32 addresses. http://cristianqtxzc.blogripley.com/14862393/bitcoin-mixing-service-for-dummies