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Hello @marcinstanczak
From what I can see, this has something to do with the core WordPress software, not the theme. They do not allow this more tag to be placed in archive descriptions, as the behavior is similar on the default themes as well.
Check this out – https://streamable.com/v0dq2h
Unfortunately, we cannot do much from our end to fix this as we do not control this scenario. It may be worth looking into alternatives to implement this exact scenario.
Hope this clears things up!
Thanks.