It's annoying.

Hello. It's really lame having to say this at this rate but there are more than two genders. You could've just made the gender an optional information or add another option like 'other' or something like that. I'm upset about it, you should fix it as soon as possible. Goodbye and thank you for your time.

Hi, Cabbage-san.

I don't think this website has ever had a neutral symbol, but, I think you should have option not to put anything if the two options do not fit how you see yourself. You could also PM the loveadmin about it.