That's weird, I see the v1.4.0 here:

Zapstore

Manent — Zapstore

Think of it as your personal "Saved Messages": write notes, attach images and files, edit them anytime, and access everything across your devices. ...

Instead via zapstore app I briefly see the app page and then an error: "The app is no longer available. Press to go back." @Zapstore can you check please?

Updating the zap store app solved the issue. Now I can see Manent's card with the correct V1.4.0