I installed a new network for my Sonos system. All components are now on the new network, except for the Amp. In order to reinstall the A mp, Sonos asks for an 8 digit PIN from the AMP. My Amp doesn’t have an 8 digit PIN and Sonos support is worthless tp help. They keep telling me to enter the PIN, which I don’t have. Apparently when I bought my Amp it didn’t have a PIN, but now they do. What can I do? Without it, my external speakers don’t work any more.