Update: We may have found the issue with BTCP SegWit. Fix is deployed, we have had some successful extractions from previously unsuccessful extractions just went through. We will monitor LBTC & BTCP until the digging team signs off for the day.
I have tried to claim my self many times with BTCP electrum wallet. It sees the segwit coins but the send always fails. It would sure benefit the community if you shared how you overcame this but since you are a paid operation I expect you will stay silent on the issue.