Investigation can take up to 6 months based on the previous same cases like you in different casino. Is the screenshot dated March is the last update by the admin on your case? Do they stop replying on your inquiry on the email even if you are asking for an update there?
KYC is not makes your case longer but the investigation on the game itself. They should at least gave you an update if you ask them though. A scam accusation is still not appropriate if they acknowledge your case.
@Blackjack.fun can you gave him a timeline? This piling of issue against the casino will create a little buzz on your reputation once unhandled properly.
I do not strongly advice anyone to avoid this website unless you are going to end up with something that would be smart and understandable and just follow the rules, if you do that then you do not have to worry about anything and you should be fine with that.
I understand that there are some people who may not be doing anything that is individually that important, but I also do think that the most important thing about this part is that we could end up with a decent situation where it is not going to end up with that if you do not follow the rules. When you do not follow the rules then there could be some people who would not be fine with that and the system may tag you and they may take months. Don't do that if you do not want to face these troubles.