zkSNACKs doesn't run coordinator and Wasabi Wallet now require it's user to find and enter CoinJoin coordinator link manually, so this wallet could be more popular with some marketing. Anyway, does anyone know where InvisibleBit LLC. operate? I checked their legal document on which mention place called Próspera few times, but i'm not fully sure if i got it right.

You got it right, it Próspera.

years of privacy research and development?? It is zkSNACKs/WalletWasabi fork and some parts of the code were copied and pasted as is. It is true it will work now, but what will the future development be like, especially if the development of Wasabi Wallet stops? Or what are the new coinjoin services that the developer can provide?
How will coordinated coinjoin transactions be managed/rules? how will you deal with regulations?

There was no copy-pasting, it was purely a fork plus minor changes (rebranding, coordinator URI). In the first period, Ginger's team will be focusing on marking to spread the news.
FTR the development of Wasabi Wallet didn't stop, it will be continued as an open source project, so anyone can continue. Their direction indeed changed. Since zkSANCKs coordinator stopped operating, they now want to make Wasabi Wallet to be able to connect to any other coordinator. It turned out that currently, the client (Wasabi) is not fully secure against malicious coordinators so their last release tried to mitigate this issue.

Ginger is different in this aspect, it meant to work 100% well with only Ginger's coordinator (the same way as Wasabi worked with zkSNACK's coordinator).
And it will be maintained by former Wasabi devs. e.g. Formet CTO, Head of UI, Head of Communications joined Ginger)

Regarding the regulations, Ginger aims to not let US citizens use their software/service as much as they can. Moreover learning from Samurai's and Tornado Cash's cases we stay on the same route as zkSANCK was in terms of filtering who can use the coinjoin service.
Ginger's is the only coordinator that restricts who can use their service, so it is most secure for the users if they don't want their bitcoins to be in the same transaction with illicit bitcoins.

The problem with the market now is several coinjoin coordinators appeared without any restriction, which means criminals can wash their funds clean without any question and those users who are also using those coordinators will mix their funds with those criminals, thus it can happen that their bitcoins will be marked as risky and won't be accepted later on exchanges and so.

Do you plan to offer something unique that is not available in original Wasabi wallet you forked off?

As I answered just now, the direction of the two software changed. As of now the uniqueness that Ginger can provide is it aims not to let criminals use their service so your bitcoins won't be mixed with illicit actor's bitcoins.
In the first period, we will be focusing on marketing and later will decide internally on new features.

That is not very cypherpunk-like of Ginger Wallet's company. This decision panders towards censorship.

What's the next thing that wallets and services will do? Everybody in the world except for US users should be able to benefit from coinjoin and privacy of their crypto? I am not enthusiastic about this decision at all.

Currently, due to Samurai Wallet's case, there is uncertainty about what coinjoin is considered in the US. Until it is settled we had to censor US citizens.
The only way to provide anonymity for the user is the censorship. Otherwise, illicit actors are going to use your service and the governments and international policies will stop it and get you in jail.