I have also had a close-call encounter with this group AzulPay/CashOneX. Please be aware that Max's Telegram account (highrisk84) seems to have been compromised or "hacked" as he will message you to attempt and get the Telegram OTP in your chat screen.
I was initially going to onboard with them since I've been seeking a high-risk payment processor that allows for a custom payment flow using their API. After some lengthy delays in communication (which should've been the first red flag) I was about to sign on, but Max's account got compromised, which kept me from proceeding any further. What a blessing in disguise.
Stay far away!
Attaching their provided API docs in case anybody comes across something that looks︀ similar, it's probably them!
PS: Still looking for a payment processor which allows for API︁ to enable a custom payment flow. Please DM me if this is you!