There are 3 ways to access Volumio:
BY IP ADDRESS (ON PC/MAC): you can reach the correct IP searching in the router settings, devices connected
BY volumio.local
.(ONLY ON MAC): typing volumio.local.
*ONLY ON MACBY iOS app: that scan Volumio streamer on the lan
Quick start guide:
https://cdn.volumio.org/wp-content/uploads/2019/01/Quick-Start-Guide-Volumio.pdfTo learn more, read here our Quick Start Guide