fakruzaruret You should be able to activate them yourself using an extend.php in the Flarum root that looks something like this (untested, should work)
<?php
use Flarum\Extend;
use s9e\TextFormatter\Configurator;
return [
(new Extend\Formatter())
->configure(function (Configurator $configurator) {
$configurator->MediaEmbed->add('audiomack');
}),
]
