Uppercase in username

[sylph1o]

Hi everyone,
I don't know if this is the right place to ask, and I don't even know if what I am reporting really is a bug. If I'm mistaken, I apologise in advance.

My problem

By mistake, I registered (some time ago) on the matrix.org server a username with uppercase and lowercase letters; let's say Me. It seems that the login interface is case-insensitive, because I am able to log in with username me on Riot web, Riot Android and Riot desktop (for Linux).
However, the Matrix ID appears to be case-sensitive: people can send me messages at @Me:matrix.org but I never received anything sent to @me:matrix.org.

What I would like

What I really wanted was @me:matrix.org, but I am unable to register the me username, since the only registration interface I know is the one provided through Riot (which is case-insensitive). Moreover, the last time I checked, the ability to change a Matrix ID was still at the discussion stage (I don't even know if it's on the roadmap).

My questions

1. Are Matrix IDs meant to be case-sensitive?
2. How can I register me, i.e. a lowercase version of my current username?

[turt2live]

Matrix user IDs are case sensitive, so it's interesting that Riot lets you log in with a lowercase version. It's possible that Synapse (the server software) has a thing in it to try and coerce things to lowercase when there's no obvious conflict, and it may be preventing you from registering the lowercase version to avoid that conflict.

Your best option is to probably email support@matrix.org with some patience - the support queue can take a while to go through, so responses may be delayed by the team. Until then, your Matrix ID is stuck in the mixed case form which means that people will have to use that to contact you.

For reference, #matrix:matrix.org or #riot:matrix.org are good places to ask these kinds of questions.

[RokeJulianLockhart]

#163 (comment)

matrix-org/matrix-synapse-ldap3#72 (comment)