Thanks for the "heads up"! And sorry to hear that you wasted so much of your time.
I fell for something similar about 10 years ago.
I don't remember all of the
details other I did not attend any presentation but, instead, received a notice of some type. I sent $100 to an address in Florida for the "supposed" airline and travel vouchers. Never heard any more from them. I followed up with a letter or two...but they did not respond. Lesson learned.