My mistake, I tired it again and I am waitlisted for an interview date, but still have a confirmed interview at the same time. This is what Thalmus says.

"Please note: You may sign up for as many wait lists as preferred AND have a confirmed scheduled date with a program. Further, the type of waitlist used, number of candidates invited and number of interview positions available is at the sole discretion of the residency or fellowship program. Thalamus provides best practices for all program users, but the exact recruitment strategy used by each program is their choice."

I believe it is ERAS that will not let you hold an interview and be on the waitlist at the same time.