Can’t use ARC.
Is your ROON ARC ready by setting a secure connection? (see 2023-07-09_08-03-27 - TechSmith Screencast - TechSmith Screencast) Are phone and ROON Core in the same network (Wifi)?
There are preconditions to fulfill.
https://help.roonlabs.com/portal/en/kb/articles/arc-port-forwarding
Unfortunately my ISP (Starlink) does not allow ARC to work and we have no realistic alternative as we live in the countryside.
A lot of information available about how to ARC + Starlink: Note for Starlink Customers
PS: None of this should be needed though when at home (same network). Also keep in mind that MUSE in ARC is only for DSP on the phone (phone is audio output).