Salve a tutti non riesco ad accedere tramide interfaccia web e mi esce questo errore( Not Found The requested URL /webpages/login.html was not found on this server.) e da circa 8 mesi non si aggiornan

As of this week, I own a couple of Deco M4s and while so far everything's been working great, but there'S one thing I'm having trouble with, accessing its web interface. The app is working just fine,