GHC2024 CA

Hello.
I went to the Great Homeschool Convention in Ontario, CA this past weekend and I'd like to register for the June Parenting Mastery 3-day seminar on zoom. How may I register with the GHC discount?
Also, I purchased the $395 package because I was not sure whether I could attend the 3 day course. I spoke with Nicholeen and said I could get the difference back if I do end up signing up for the 3-day course. How may I go about processing this?