open from a direct link from the Play store (in which the app page opens, however, with almost no information, such as version, permissions, size and so on, and the download doesn’t start.
Tested this myself, as that used to be the workaround for apps not appearing, but I'm facing the same issue on some apps. For the time being, installing/updating manually via APKMirror isn't ideal, but I'm not installing the Play Store.