SegWit BTC Address: 3Q4HayXqfJfeYbCawngN1sRAiuN88vMknx
Not that you were getting accepted in the first place, but that's a P2SH 2 of 3 multisig address as shown by
the input scripts on this transaction. It is not P2WPKH (nested Segwit) or P2WSH (nested Segwit + multisig) or bech32 (native Segwit).