Re IB: if you are a "Pro" account generally not. If you are a "Lite" account, yes they get paid for order flow. As to the other point, I belive the issue was

Re IB: if you are a "Pro" account generally not. If you are a "Lite" account, yes they get paid for order flow. As to the other point, I belive the issue was in settlement, not clearing, ie with DTCC collateral reqs.