Any interesting projects that are currently working on this? Adding a mixing layer on top of Bitcoin doesn't sound like a trivial task.
Check nopara73's HiddenWallet
https://hackernoon.com/introducing-hiddenwallet-full-block-spv-tumblebit-wallet-testing-release-1054a15a9bb1It is developed slow and not yet functional but he plans to add TumbleBit which is like ChipMixer but decentralized and slower.
After few hours (through Tor) I've decided to enter the voucher code to
check them , however it kept saying ''This voucher is invalid or already
redeemed.'' in the end I managed to get access through mozila after many attempts.
I just fought might be an error and decided to leave for a bit longer so generated another voucher code.
And again I've tried to check the voucher code and nothing worked , link through Tor was so useless.
After many many attempts and few good hours I managed to get in with the same code and withdraw my chips .
So your problem was that the voucher code did not work in Tor but worked on firefox?
If that's true then i would suggest talking to the support team. This is probably a serious issue as Tor will provide much better privacy for regular users/whales compared to on the clear net. They'll fix it for you, if it isn't just a problem on your end. But anyways, at least you got your money back eventually.
ChipMixer does not work differently on different browser nor it does on clearnet/Tor.
If voucher code did not work then but it works now - it means there was additional space copied and pasted or not all characters were pasted.
If there is any error, ChipMixer never responds with "invalid or redeemed".