But as far as I know Roobet only ask for level 1 KYC, right?
Yes, on Roobet, all players have to complete at least the level 1 verification by providing the following information: name, second name, date of birth, country of usual residence, and telephone number
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They have a deposit/withdraw threshold amount after which you will have to complete level 2 verification.
This doesn't mean if you are going to deposit/withdraw small amounts you can provide wrong information because they do crosscheck those information.
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https://roobet.com/aml-policy