It worked on the live server via visual studio code, but now I cannot download anything. On the live server I saw such an icon with download the Chrome app.
As far as I know, it is not possible to host Progressive Web Apps on our hosting. This security system prevents the “installed app” from interacting with your website:
iFastNet’s premium hosting does not have this security restriction, so you can host your website there. Even at Starter account at $29.99 per year should be enough.