Some participants unable to connect to Audio during Zoom Meeting

[Zurison]

Some participants receive the following message: "The meeting does not support dial in or Call Me to join. You  cannot connect to the audio"  However, other participants can connect to audio. I can't connect to audio in meetings I host on my PC (Windows 11) from my own android phone. I cannot start a meeting from my android phone with audio. I get the same message on my phone as in bold above when I try to host a meeting.

Under my settings: "telephone and computer audio" is selected.

Under Audio Conferencing, the countries of the relevant participants are selected (USA, Australia, UK etc).

This issue occurred suddenly. No settings had been changed by me prior. Zoom V 5.15.3.