How to save URL to homescreen? It doesn't keep the link! Grrr

Hi all, so as per title, when I use browser app to make a pwa or ‘add to homescreen’ it works, but then opens the home page not the actual link I had created. From memory there was a hack where you would put your phone offline, airplane mode I think’ and then it would save the link. But doesn’t work anymore. Any1 have...