Princeton interview?

I got an e-mail from Princeton with the info of an alumni who is supposed to do the interview. It was two weeks ago and he didn’t contact me yet. What should I do?

My son is in the same situation.

It may take 2-3 weeks before the alum is able to contact you with an available date. If you are
nearing 4 weeks without a call or email, then contact the admissions office.

Still nothing. I will probably contact them to see what’s happening.