The casino mixed two things together, and it feels like you keep doing the same. In my opinion, it is necessary to understand the differences. Let me try to explain that using examples:
"Dama NV is even so exemplary that they will also block you with an Estonian license if you have requested a block with their Curacao license."
It is not about the license; instead, it is about the Dama NV group. The license is irrelevant in this context; no one contacts the license provider on your behalf to guarantee the exclusion.
Thus it is the 1) Single-operator level.
Lince would have some influence if you, as a player, sent a request to the specific licensing authority and asked for self-exclusion with the whole license. Unfortunately, this option has never been consistently effective, except at the nationwide or license-wide level. Curacao has never provided this working option.
Now I believe you should have some idea why it is so troublesome to properly self-exclude in many casinos. As you can see, the national level—e.g., the Finnish license—has no use for the rest of the world. Aside from that, Cura?ao has no option to globally self-exclude you from casinos under its license, so it is sadly up to the player to self-exclude on the operator level.
Casino groups are still "1) Single-operator level," and it makes no difference whether the casino has the same owner, management, design, or license if the terms do not specifically mention the group's ability to self-exclude based on a request made in one casino within the group.
However, sometimes the player is lucky, and support confirms that the player will be self-excluded from the entire group regardless of the terms. In such cases, license does not play a role; instead, I would recommend asking support to provide a full list of casinos where the request will be upheld—always ask and take screenshots. ????
As far as I can see across the forum, addicted players are very confident that if a casino is obviously a sister site to many others, they just need to ask once and the work is done. Very wrong and very dangerous idea.
In reality, it is not so simple, and actions based on unfounded assumptions usually end badly.