Thank you for sharing your dream with us. Please take everything that I share to the Holy Spirit as He Alone gives the accurate interpretation.
Your father in the dream is your Heavenly Father, God warning you. I got this sense before I saw the following excerpt of your dream “The part that has me a bit baffled is that it was my deceased father in the dream, I don’t recall ever having a dream with my father in it. And that it was obviously a direct warning to me, I have never had that type of dream either. Also, why was I worried about this man, whoever he was, knowing where I live? Any insights would be helpful. Blessings!”
The following question “why was I worried about this man, whoever he was, knowing where I live?” pertains to you being protective of your personal details. Perhaps they were asking for demographic information for you to make a financial payment, e-mail, register for the information, etc? Where you “live” has to do with your “life” in the context of your dream. In other words, in waking life you were probably concerned about how/if your privacy would be respected if you joined the challenge or group.