oomphm It sounds like the language-locked version was applied to your account, but I can't tell you for sure whether it was because you're currently in Poland or because the "global" version you bought was not in fact global. Either way, you can try contacting EA customer support to ask that the language-locked version of the base game be removed from your account, since you also have the global version there somewhere and should still be able to use it.
I would strongly recommend using live chat rather than email. Choosing Sims 4 > [all topics] > I need help loading my game allows chat to show for me. If it doesn't for you, try changing the location at the bottom of the page to U.S. or U.K.
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