These are the problems it can give
https://forum.enlightenedstates.com/t/question-about-matchmaker/4485/2?u=tf_cad
https://forum.enlightenedstates.com/t/question-about-matchmaker/4485/3?u=tf_cad
https://forum.enlightenedstates.com/t/question-about-matchmaker/4485/4?u=tf_cad
https://forum.enlightenedstates.com/t/question-about-matchmaker/4485/5?u=tf_cad