Well spotted VWM
It's important for player safety to expose any site using accreditation to which it is not entitled.
However, I think we should await the response to your eCOGRA report - this may be a case of an operator "jumping the gun" - also reprehensible but perhaps not quite as evil as claiming a seal fraudulently.
Tex got back to me today.
She told me that Eurocity was a Cassava white label, and had not been granted a seal. She is going to tell them to stop using it.
This does look like "rogue practice" rather than an operator "jumping the gun". They have seals for their main casinos, but this does NOT cover the white labels. Cassava really should know this, yet they just keep on doing this. Cassava have been in the business almost from the start, so there are really no excuses for such "newbie mistakes".
It looks like they KNOW what they are doing, and are constantly pushing and bending the rules as far as they can, but without there ever being SERIOUS consequences. They have been around long enough to know just how far boundaries can be pushed before they shatter completely.
In this case, it seems they can use a seal from one casino to market a white label, but if they get busted, and eCogra find out, they are told to stop using it, and they do - boundary pushed until it creaks, but not so much that it breaks. So long as they comply, nothing further will come of it, but later on, along comes another white label, and maybe another misused seal - repeating the process that they know.
Since eCogra accredit casinos, they can be pretty sure that eCogra are not going to expel their main seal holder brands because a different casino misused the seal, no more than they would expel All Jackpots just because, for example, Golden Lounge had continually misused an eCogra seal.
This seems a weakness in the system, where eCogra treats each white label as an independent entity when it comes to behaviour and consequences, yet Cassava do NOT treat the PLAYERS as though each white label is an independent entity, and players could have winnings from the astonishing* £10,500 welcome bonus if it is deemed that they had "playing patterns" that Cassava didn't like long ago at, say, Reef Club.
From the mailer, and the website, there would be no way players would make the connection, since it is common for the same software to be used at many completely independent casinos, and no-one believes there is a "one account per software" policy anywhere in the industry in general.
* more like unbelievable, a fantasy bonus perhaps
Even the rogues would consider this a step too far, and there must be some pretty draconian "small print" at Eurocity to prevent the vast majority of players from cashing out from the bonus, and I'll bet many that DO manage will have their payments messed around with because they will be considered to have "cheated" through their playing tactics.