The first interview with the Chief People Officer and another junior member of the marketing team went swimmingly. ...their invite did end up in my junk folder, so we did have to scramble a bit to make sure we met on time.
I made it through to the next round of interviews with their CEO and CRO - same exact problem with their calendar invite - it went straight to iCloud junk. I sent maybe 3 inbound website inquiries to no avail, and received no response to direct messages to both Senior member of the organization. Quite unprofessional, and borderline childish. Anyway, best of luck in their search.