PWA functionnality doesn't work

Hello there,

I'm trying to make my app rendering as a PWA but I can't make it work fullscreen on mobile devices (even Desktop actually).

I added the option in the settings with required information with logos that correctly charge but no way to get the "Add to home screen" option to get it fullscreen as real app. I'm currently using a url for testing if it can help to better understand.

I didn't do anything special expect what's explained above, what it is going wrong ?

Thank you in advance for your help !


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