I don't know how to use Mojo, but the page sends a typical post request. The quick scan of Mojolicious' docs suggests that it must be something like 
my $response = $ua->post('https://what.cd/login.php' => form => {usern
+ame => 'foo', password => 'barbaz', login => 'Log in'})

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In reply to Re^5: Mojo::UserAgent Can't locate object method "say" by Anonymous Monk
in thread Mojo::UserAgent Can't locate object method "say" by yuppie

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