@justjavac and all users of this extension. A few minutes ago @Toby updated this Flarum installation. As a result I (and probably others using this chrome extension) have experienced issues with posting and/or logging in. Even if you could post your session would expire and you would have to login again.
The issue is caused by this Chrome extension, it keeps the token for authentication alive it seems. So if you experience these issues, please disable the chrome extension or unset your credentials. After having succesfully logged in here, you can re-enable the chrome extension.
Update: do not enable again. The forum now uses CSRF tokens, due to this change, all requests with your credentials from the Chrome Extension will fail and will result in being logged out every time the extension attempts to log in.