The mogstation changes are scuffed

[Rehayem]

I don't think you've mentioned in which country your are, and it's probably a long shot because I doubt they will even comply, but if your are in the EU, maybe you could try to request a country change under the GDPR law that give the right to rectify your information, since if they do not respect that, they can be fined for millions of €.
Or if you're not in the EU, maybe check if there is some similar regulation in your country.

The problem is that this should be possible by default, rather than SE's idiotic response of "make a new account".

[Arua]

The problem is that this should be possible by default, rather than SE's idiotic response of "make a new account".

Oh 100% agree, it's mind blowing that it's still not supported and that it is their response.

I just mentioned this EU regulation in case it might slightly increase the chance of being able to change the country.