Because the police were not involved in the original situation, the odds are overwhelming that no criminal charges will ever be filed. Could they? Yes. The prosecution has up to a year from the date of the incident to file charges against you.
If you're asking about a summons to civil court - because you paid their civil demand, that settles any civil case regarding this incident and you won't be getting a summons.
If you're asking about getting a release from them.... if you paid, contact them and demand they send you a release.
It was a mistake to pay the CIVIL DEMAND. It goes to a law firm and has NOTHING to do with whether you'll be CRIMINALLY proescuted for the shoplifting, and for a $10 item, you probably won't be.
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I'm only licensed in CA. Please note that this answer does not constitute legal advice, and should not be relied on, since each state has different laws, each situation is fact specific, and it is impossible to evaluate a legal problem without a comprehensive consultation and review of all the facts and documents at issue. This answer does not create an attorney-client relationship.