I downloaded the CSV file and continued through the steps in the lab. I was having a hard time around step 91 in developing the formula, but I still found some tabs that allowed me to select the correct fields. I now realize this was incorrect and that some fields are missing due to them being considered "unmapped" during the CSV download.
Long story short I got to step 129 and I am unsure if anything needs to be deleted and re-downloaded to ensure that all is correct. SOS?
P.S. I tried the step of re-checking everything in the comment section in fields and relationships; created more unmapped fields.