Language redirect source URI not working as expected

[AndreKelling]

Foreword

I did not read that this plugin is made for a multi-language site.
In the Readme it's written that it supports "Supports multi-site".
I don't know if in Craft CMS that means something similar.

Issue

While using the plugin with a multilanguage site.
I saw that I need to double write the language path on the source URI to make it work.
Which is I guess not intended.

So that looks like:

en/en/topics/hassrede

with the placeholder written /en/ before the input.

On the Destination URI it's okay to let the second en/ out in the input.

Also unexpected behaviour

When i change a slug on a category or an entry, a redirect is automatically created with the wrong source URI path.

Maybe me

But maybe that has something to do with my Site settings?
I am not really deep into Craft CMS.

Version

Craft version: 3.7.59
Plugin version: 3.0.12
PHP version: 7.4