I notice that under Gender you can add extra items which is great, but still on the back end dashboard the demographic info just shows M and F even though I have added extra genders (I use M, F, MTF, FTM, Fluid and Other) Also the information given is not correct - as an example in testing I had 5 users. 2 set as M, 2 set as F and one set as FTM, yet the stats show 67% female and 33% male (rather than 40, 40, 20) so pretty useless as stats go!
You would need to post in the technical support forum and we could take a look at this, we are unable to offer support in the pre sales section. I have tried this on a test server and im not getting the result you are suggesting