Traveling in Japan & noticed the Famicom games aren’t coming up as Japan releases. Just picked up Elevator Action & Zoids 2 both with the same issue.
If we don’t have edition information, you have the option to select a default EU or US version. For Famicom releases, these are of course the Japanese versions. I’ve added the Japanese editions for the reported games, so they are now selectable. Thank you for reporting this.