arretnet

Hi, thanks for this answer I'm not sure I really understand what you mean by  "What is |applicationServerKey|?" but if you mean the value it's 'BER7JSVXnZY2jDWAmuK9OT719QNjRzwE2XCKSp74stJxbTmueVKGUeOPrgiOuTTZs-rDCJBEjVpkozhsBXXNH4M'; I saw that Firefox...

thanks, step 1 one and step 2 are ok  and it works well on Firefox Desktop, Chrome Desktop and Chrome Android( mobile) I get the notifications with this three "browser"...

With your url https://projects.petrucci.ch/webpush/   I get the same error  on Firefox android  :  "Subscription null" I've my answer, the browser is the issue It's Firefox Daylight version 83.1.0 Cordialement. Patrice...