Firefox plugin

When installing the new Firefox plugin, the first text was in Dutch, but the second screen was completely in English.

Is there a reason for that?

Also the explaining text in the FireFox plugin manager is partly in Dutch, partly in English. Did I miss a translation request?
Unfortunately, I cannot copy or printscreen that…

The strings that are still in English have not been translated yet at webtranslateit.com. At Sign In · WebTranslateIt, you should see the untranslated strings.

Did that now, but it is far from the complete text I noticed in English…

I checked all entries; corrected some. But I still do not think it was all. But we will see after an update.