Retrospective: We identified an issue with leads coming into FLG via a lead provider URL (second option in 'Capture Leads'). From the time we made the change to redirect HTTP to HTTPS yesterday at 9pm, until 10am this morning, some deliveries would have resulted in an error.
Any delivery that resulted in an error will need to be resent. Please contact support if you need our help to resolve this. Sorry for the problem here.