unless the app looks different between devices, i don't understand this confusion? (._.
just like WT and Tapas, under each chapter there is a visible comment section? it should have a red speech-bubble icon with number of comments displayed. AND a top 3 comments like WT does.
pretty sure "Like" is just that, Like per update.
"Favorite" is subscribing (it'll turn into a heart to indicate you're following the webcomic)
what i'm not sure of is if there is a way to see how much subs a series has? i don't think it's visible to the public (like WT) and i hope that's the case tbh.
that being said, i feel their interface can be more streamlined that what it is atm.