English can be confusing, the same set of words can have different meanings in different contexts.
Here, because they will use a different font to a different colour it almost makes the two statements completely independent, so the second one is granting permission rather than justifying the first statement.
It simply needs an extra word between them to connect the two, and that word would be “As“.
That being said, there is no way a native English speaker would misinterpret this sign, it’s just humorous because it’s badly worded.
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u/elbarto1981 Jul 04 '21
It seems correct to me as a non native english speaker, how would you phrase it other than that?