By looking at the BitSend SegWit code, I'm going to guess that SegWit is not yet active. BitSend miners have been signaling via a version bit that the wallet's BIP 9 requirements aren't aware of (BIP 91 from a poorly-maintained pool? Not sure; it is the cause of the current wallet warning). But, at least 1 block has been mined in the last 1728 blocks that signals the correct BIP 9 version bit. That should mean SegWit will fully activate on BitSend in roughly 2.5 days. Maybe one of the devs who implemented the code this way can confirm, but I am 99% sure that this is the current case.