Praise be to Allah.
We ask Allah to reward you for your keenness. In response to your question, the reward mentioned in this hadith is only for the one who reads the Quran as it is in Arabic, not for the one who reads the interpretation of the meanings in any other language.
However, if a person reads a Quran translation in order to understand the meanings and benefit from what the ayat are saying, then he will be rewarded for doing this, and his reward is with Allah. This is because the Muslim will be rewarded for reading tafsir (explanation and commentary), and a translation is tafsir.
But there is no indication that the person who reads the Quran translation will earn the reward mentioned in the hadith. The bounty of Allah is immense.
And Allah knows best.