Kaktus207 please, tell me your forum URL or check logs at https://freeflarum.com/settings/logs
tom23 I can have a look at it again, but first I have to bring back forum creation limit. Someone registered about 80 forums for the same E-mail account, which blocked us in Outlook. I thought that this wouldn't be an issue because the forum registration form is protected by captcha, but apparently some people are patient enough to mess things up. I wish I'd realize this sooner, but I was out of my home for a week, so I didn't really pay attention to FreeFlarum.
Starting now, new users aren't able to register more than 3 forums for the same E-mail.