YouTube with a channel rather than user?

Hi,

I have used this plugin several times, but have a problem with a current client who would like this to link to their YouTube channel (channel/channelname). The plugin settings only allow for a username (e.g user/username), and as such doesn’t seem to be working. Could you please let me know if there is a way to make this work?

Thanks

https://www.ads-software.com/plugins/subscribe-connect-follow-widget/