I realise it's a bit late to say this but I think it's better without the 3 dots between each bubble since that way it's really seems like the person who speak make a pause in the middle of each sentences when it's not necessarily the case.
Does anyone else find the watermarks really annoying. My attention keeps getting drawn to them and my brain automatically reads them like part of the dialogue. It would be one thing if it was in the same space each time since it’s easy to ignore but it changes positions every page. I would rather prefer a huge transparent watermark then the tiny one which my brain keeps reading as regular text.