nostr:npub1zafcms4xya5ap9zr7xxr0jlrtrattwlesytn2s42030lzu0dwlzqpd26k5, I am not 100% familiar with the details of mute-lists, but I believe they are often stored in a special kind of Nostr event, so it should be generally interoperable, but yeah, there might be some specific detail that is causing this issue