This is likely the one they are referring to: https://github.com/tulir/mautrix-signal/ https://github.com/tulir/mautrix-signal/ I use it myself and it has been

This is likely the one they are referring to: https://github.com/tulir/mautrix-signal/ https://github.com/tulir/mautrix-signal/ I use it myself and it has been working perfectly for me since I switched to it.