Good catch! At first I thought rahakott.ch is just their other domain (chinese domain) but glad you've mentioned that the main Rahakkot.io website is already down.
They already had an Op to switch languages on their website so there was no need for a different domain specifically for Chinese language
https://rahakott.io/lang/cn
They also had warnings about phishing domains on their website but that won't be visible anymore since it's Offline so i will leave the warning here;
Source:
https://web.archive.org/web/20200729071822/https://rahakott.io/pages/newsBut aren't we late to report this? Rahakkot.io fully stopped their operations in the mid August and only shutdown their website recently, which had been the time that those scammers would copy the Rahakott's website to their own domain.
It's not late, the scam is actually just getting started since the original wallet closed their website.
The warnings can help people who might google the domain name. They could end up seeing this thread.