Please be sure you deactivated registrations if you don't want to.
Relevant changelog quote:
> **Sign up / registration**: In this release, you can open your instance to new registrations (aka sign-ups) via the new signup page at `https://__DOMAIN__/signup`. No more manually creating new users via the CLI :)
> **Accounts overview for moderators**: To support the new sign-up feature, and help instance admins to moderate, we made a new section in the settings panel where admins + moderators can get an overview of accounts, and filter by instance, status, and more. You'll find this new accounts view in the settings panel.
[Read the full changelog.](https://github.com/superseriousbusiness/gotosocial/releases/tag/v0.16.0)
