[Resolved] Missing translation in CSV file

First of all Hello to everyone, I'm very pleased to start using litecart.
Sometime ago subscriber only to help translate in french but never really used it.
This morning I've locally installed litecart to have a look on it and then added french language.

Seen :

maintenance_mode:description 
and 
error_another_language_uses_url_type_none

non translated.

I cannot contribute as usually at the translation place without telling here what is happening while it is supposed to be 100% translated at the time I'm writing.

Cordially

Scan your files to collect translation keys before importing.

Thanks, thought I did but you gave me a doubt.
I made a new fresh install then scanned like you said before importing.
I got the same result with those two missing translations. (screenshots joined)
it's ok to translate locally but not to contribute.

It's possible the scanner misses these two due to the escape character in the injected translation. I will add that to my to do list.
https://github.com/litecart/litecart/blob/2.5.4/public_html/includes/templates/default.catalog/pages/maintenance_mode.inc.php#L27
https://github.com/litecart/litecart/blob/2.5.4/public_html/admin/languages.app/edit_language.inc.php#L36

If anyone wants to play with this. Here is the code:
https://github.com/litecart/litecart/blob/2.5.4/public_html/admin/translations.app/scan.inc.php#L29-L36

I understand exactly nothing on coding php, only seen they are a lot of question marks ...
but for those who know about it there's maybe a beginning of answer below
https://stackoverflow.com/questions/10830366/how-to-make-scanner-properly-read-escape-characters
that's all I could do for help

Cannot find this one "Powered by LiteCart®"  to translate, this one should be the first in your "to do list" translations.
As english language seems to spread all over the world even on the Asian side, sometime thing like this could look at normal but it is not :)

You can find these lines in: includes/templates/default.catalog/views/box_site_footer.inc.php

<section id="copyright">
  <div class="fourteen-forty container notice">
    <!-- LiteCart is provided free under license CC BY-ND 4.0 - https://creativecommons.org/licenses/by-nd/4.0/. Removing the link back to litecart.net without permission is a violation - https://www.litecart.net/addons/172/removal-of-attribution-link -->
    Copyright &copy; <?php echo date('Y'); ?> <?php echo settings::get('store_name'); ?>. All rights reserved &middot; Powered by <a href="https://www.litecart.net" target="_blank" title="High performing e-commerce platform">LiteCart®</a>
  </div>
</section>

You will need permission from @tim to modify this line!

Thank you, this is one way to do.
I meant if it could be translated in used languages when click on flags so each country can have "Powered by" in their own language.
Doing the way you said is one time setup but never change when clicking on flags.
I'm not asking to remove or modify but only to get proper translations.

<section id="copyright">
  <div class="fourteen-forty container notice">
    <!-- LiteCart is provided free under license CC BY-ND 4.0 - https://creativecommons.org/licenses/by-nd/4.0/. Removing the link back to litecart.net without permission is a violation - https://www.litecart.net/addons/172/removal-of-attribution-link -->
    Copyright &copy; <?php echo date('Y'); ?> <?php echo settings::get('store_name'); ?>. All rights reserved &middot; <?php echo language::translate('title_powered_by', 'Powered by'); ?> <a href="https://www.litecart.net" target="_blank" title="High performing e-commerce platform">LiteCart®</a>
  </div>  
</section>

Then search in translations for "title_powered_by"

Perhaps I didn't make myself clearly understand or even me didn't understand ... but also this is maybe difficult for team to get this footer automatically translated.

I don't understand what you are trying to achieve. 
The code i mentioned above is translatable in translations. That means: if a user clicks on another language, the translation will do the job for you. 
But you always have to do the translation yourself in the translations, for each language you have activated
Or maybe you expect the following behavior: a user clicks on a language and de footer appears automatically in this language, without translate it manually in translations?

"Or maybe you expect the following behavior: a user clicks on a language and de footer appears automatically in this language, without translate it manually in translations?"

Yes exactly, automatic translation as shown below  is not working.
 

I understand. But that's quite a lot of work to do that automatically for every language. It is much easier to do it manually for the languages you have activated...

Thank you for this answer, so if I have two languages on my website eg: french and thai, will it work if I do the trick when I will switch languages ?

yes it should work. Find "title_powered_by" in translations and translate it for french and thai