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He said they deleted his balance.
The words "balance" and "logs" have very different meanings. Moreover, as you can see from the screenshots of the conversation with the support, they did not delete his balance but put it "on hold" until the case is resolved. This is a normal procedure in almost all casinos.
As I said before, please read more carefully before posting.
This is the normal process and the site should ensure that the gambler understand this process, because if they don't this will be the result, the gambler will panic and probably will spread the news right away to ask for some help. There's a clear proof that the site is cooperating with OP, so let's wait for the final explanation of Duelbits and I believe if proven wrong, the site should compensate the waiting time, imagine the stress that this gambler feel, if the site see the irregularities they should say it right away.