Can I suggest that you contact the author for help by PM @Saiyato, or on the Github site, where the plugin is maintained (you can find the URL under the Snapcast entry in Volumio Plugins Collection).
Can I suggest that you contact the author for help by PM @Saiyato, or on the Github site, where the plugin is maintained (you can find the URL under the Snapcast entry in Volumio Plugins Collection).