Read my post above.

I tough already explain everything, do everyone need a proof did they really accepted a segwit address? Then, I give everyone a proof :

Here a few deposit and withdrawal from them using a segwit address:
1. Deposit
- https://www.blockchain.com/btc/tx/c2c05eb8670d1514e2d8655d247999f8dafa030aec799c24a7e1818f71aa0ba7

2. Withdrawl
- https://www.blockchain.com/btc/tx/6ad938fc61b84fb1631609a769d248f084329cc907143869b754cd4d37701d4b

You can check the hash transaction all of them using a segwit address, more proof just see my address signature campaign and compare it with the hash transaction.