Hi.
For some reason, when I activate this extension, I can't see any configuration. Any hints?

Flarum version is 1.8. I cleared cache.
[Edit]
Hi,
I just wanted to follow up on this issue.
At first, it looked like a problem specifically with the Title Length extension, because its configuration panel was not showing any options. However, after further investigation, I realized the issue was not related to this extension itself.
This started happening right after upgrading my Flarum installation from 1.2 to 1.8.
What I found is that all extension configuration panels were affected, not just Title Length. The admin UI was loading, but configuration fields were missing across multiple extensions.
After isolating the problem by enabling extensions one by one, I discovered that the issue was caused by incompatible extensions breaking the admin JavaScript.
The problematic extensions were:
justoverclock/staff-members-widget
justoverclock/flarum-ext-welcomebox
Once these were disabled/removed, all configuration panels (including Title Length) started working correctly again.
So this was not a bug in the Title Length extension, but rather a side effect of other extensions not being fully compatible with Flarum 1.8.
Hope this helps anyone facing a similar issue after upgrading.