The issue hasn't been resolved, why have you tried to close the discussion?
Pretty scummy behaviour if you ask me.. https://en.community.sonos.com/components-and-architectural-228999/sonos-is-forcing-people-to-buy-new-hardware-as-they-ve-broken-the-connect-amp-and-they-refuse-to-fix-it-6888610/index10.html#post16712063