No idea if it will work, but now that you have reset, see this thread on how to enable multicast on a 2960 series switch. Or sell it and put a dumb (but not tp-link) switch in its place.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).