Redditor experiencing difficulty creating an account on this instance

I've come across a Redditor experiencing difficulty creating an account on lemmy.today: https://old.reddit.com/r/Lemmy/comments/1jgpd2o/problem_editing_account_on_lemmy_but_on/

Is there some way you could reach out to them, or they could reach out to you?

I couldn't find an email address or other contact info listed in the sidebar or footer of the lemmy.today instance.