The problem here is that this site is probably a dummy site designed to perform phishing attacks which @JeromeTash clearly specified above.
Crypto gambling sites asking for KYC on sign-up is very rare based on my experience with them and the ANN details are messy making this a shady site in my opinion. I advise avoiding this site due to these issues currently.
I was curious about that too, so I sent an ticket on their support asking if planetodbets.bet is part of their company. so far there is no answer yet. but I am not gonna lie that I have seen mirror domains so the gambling site could cater on a specific part of the world/area. but yeah, I suggest avoiding it at the moment until someone confirms that the website is part of the company.