...the code can be used only once this means that after using it at least one user, another user will not be able to use it...
It would be 100% clear if written like this: "The code can be used only once and by the first (single) person", especially for not native English speakers, because in actual form this is not clear.
...The code must be sent to the bot through a space along with the address of the wallet...
It would be great if you add it to the OP because it will be hard to guess I assume and the bot gives no other clues on how to redeem it.
And what with the website? How to redeem this code there?
The fact that the prize codes were not included in the plans of BattleHashes, as it is almost free distribution of money, so make it in the instructions were not included in the plans, most likely the distribution of such prize codes will be stopped. Prize codes were made only for telegram, as there are a lot of players on the website, we wanted to attract more audience to telegram