If your speaking about the Roku channel then the issue happens to me too. It’s probably a temporary issue. But there are tons of ways to watch it. You can rent it for $2.99 from Redbox, Prime, Vudu and Apple TV
Odd, because the other Roku employee (Kariza) who responded claimed to be aware of the issue and said the appropriate team was working on it. Regardless, the point is moot now, as both Caddyshack movies appear to no longer be available in The Roku Channel library.