Unable to kick jigasi users

I can kick users who are on desktop, but cannot kick dialin users. Nothing happens at all.
I checked the browser log and get this:

<body xmlns='http://jabber.org/protocol/httpbind' xmlns:stream='http://etherx.jabber.org/streams' sid='xxx'><iq id='xxx:sendIQ' xmlns='jabber:client' from='bork@conference.meet.aquilatech.com' type='error' to='p-a0_xxx@guest.meet.aquilatech.com/6q81Wx2I'><error type='cancel'><not-allowed xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/></error></iq></body>

I’m thinking this is a permission issue, can you give me a clue where to look?
Everything else in Jitsi Meet is working perfectly.