The app requires an existing login to use, right? I tried the app since the website's email/password registration screen just returns "An unexpected error occurred" every time I try it, but didn't see a new registration option for the app, just the login option.
I've found that a field used to store account timezones was too short for yours. I've increased the size now so your next registration attempt will succeed.
@TyrianMollusk@infosec.pub Yes, that is correct. There's no way to register for an account through the app ATM. You'll just have to do so through the website.