I wonder if ChipMixer with the upcoming fork tomorrow at block 501451 will take any measures to prevent people from gaming the reserve pool to obtain a double amount of split value by quickly mixing coins after block 501451.
ChipMixer is as far as I know the only mixer working with the concept of providing people with private keys containing pre generated chip values. It would be sad to see that due to this abuse the reserve pool gets emptied.
We did not notice this fork and reserve (for higher chips) has been emptied. This means we have to change some things.
For now we are introducing mixing fee of 2% of deposit. It will be less profitable to abuse mixer.
1. Why I'm able to reuse the session token even if i've destroyed them ?
New session creates a random token. When you destroy session, session data is destroyed. When you reuse token, you create new session with the same token.
2. How i can import private keys in an existing wallet on electrum? Does it work with the local sweep function?
If you have deterministic wallet - you cannot. You can sweep it to deterministic wallet but you will pay miners fee for that.
It is not advised to mix two wallets - not mixed funds and mixed funds. When you spend from your wallet your transaction may connect both which links your addresses.
I checked the website and I cannot find anywhere it says that the 2% deposit fee is in place before you actually start the mixing process. I recommend that this be put somewhat clearly in the site, as people who have used ChipMixer before, and even those who have not, could not know about this fee and would complain about it afterwards, potentially hurting ChipMixer's already established reputation. The way it is right now is easy to miss and conflicts with the information in the FAQ. Updating the FAQ would definitely help in this case.