Try entering a birthday in the profile page. I filled out my profile but when I got to the birthday when I selected a month the page went blank. When I was able to get back to the page my changes were lost. So I re-entered as much as I felt like re-entering and saved and then I tried again to specify a birthday. The same problem occurs whether I try to specify a month or a day; the page just goes blank as soon as I select either a day or a month.
I am using a current version of Edge and a current version of Windows 10. The same thing happens in Chrome and Edge uses Chrome internally. The problem does not exist for Firefox; I was able to set my birthday using Firefox.