We finally reinstalled correctly our weblate instance. You could find it at the following address : https://weblate.duniter.org
You can register with your email address, and you will be able to help us translate the clients. If you speak a language not present and would like to translate, just ask and we will add the necessary files !
In the end, all your suggestions are automatically provided as pull request on the repositories
To configure automatically the languages you want to translate, just add them in your profile ! Then configure your watched projects and you will be able to see the state of the translations on your home, like below :
I hope this will help the clients to get translated in many languages