That's not really understanding the complaint, actually. The game looks promising, but let me elaborate here:
The problems with formatting and exposition are not just that you put a lot of information in or centred the text. The problem with exposition is that a lot of the time the information is being drawn out needlessly: for example, you have a whole popup explaining that nobles use their domains in conversation in the place of surnames, but this is a pointless passage because it's then obvious on the next pages even if you weren't told, so this is effectively a page of redundant information. With the formatting, as well as badly placed images (maybe browser-dependant?) you have gone with a narrow text width on the page, line breaks far more often than is conventional, and lots more doubling up on things like telling us in prose who is speaking then also putting their names next to their speech on a separate line. Several pages also run on when they should probably load onto a whole new page.
These will probably all sound like minor quibbles on their own, but there is a very important problem with them. They all contribute to exactly the same problem. Extra exposition makes the text body longer. Narrow text body makes it longer. Frequent linebreaks? Longer. Repetition? Longer. You are already telling your story in a slow/long style, which is perfectly fine, but the medium you've chosen is a challenging one for that, and so unless you can clamp down on the factors making it worse people will be completely turned away by the "wall of text" effect. You have a lot of information, yes, but you also have way lower information density than a lot of text games do.
Anyway, just my observation in the hope that it will help. Good luck with the game.