I'm also having a similar enough issue, so I think it just might not be fully complete right now and this is the end of the current story content until the next or a following update, since I don't even see an option on the page at all; a slight edit, apparently some people have gotten past this part themselves? Not entirely sure, it seems like this is the first version {0.6.1} that has this quest, I personally have zero idea what is going on.