Portal app not on Desktop off my mobilephone

Hey Eve Team,

Unfortunately, I can only open the app via the playstore. After installation, the app (the logo / app start button) can not be found on the phone. Only when I go to the playstore and go there on installed apps, I find the app and can start it. Reinstallation and cell phone restart after installation, I tried. It does not work.
Phone: Samsung S8

Beste Regards,
S.Schneider