Do you want to help us translate the website to Spanish? - We offer you a reward.
https://www.betbtc.co/assets/i18n/es.json

Additionally, we are also looking to Improve the Chinese & German language to someone who may be interested.

The language files have only around 300 lines.

English Base Version:
https://www.betbtc.co/assets/i18n/en.json

Chinese:
https://www.betbtc.co/assets/i18n/cn.json

German:
https://www.betbtc.co/assets/i18n/de.json

PM for more info.