Wait, but the user wrote "Classic" in the topic. Adobe doesn't have a "Classic" version of Acrobat. Maybe they're confusing it with an older version before DC? Adobe Acrobat X, XI, etc., were released before DC. But since 2015, Adobe has used the DC (Document Cloud) branding. The recent versions are Acrobat DC 2021, 2022, 2023, and upcoming 2024. So perhaps the user is referring to the latest version as "Classic," but that's not correct. Alternatively, maybe it's a translation issue or a misnomer.