I think they have been starting to accept the unanglicized forms since JoDee111000's post. They teach the equivalents because you need to know them. It is up to individuals what they like and many people with Gaelic given names like to keep them. It's just like spelling people's names the way they choose. My name is Daibhidh and no one can tell me my name is Dàibhidh, even though some people try, as that is the way some people choose to spell their own name.
It does look as if there might be a fault with this question so the next time you or someone else gets rejected here, if you are on a computer, please copy and paste in here the answer you have given and their 'correction' from the answer page so we can see exactly what is going on. (Note this is not usually possible on a phone.)