Maybe try to start a new game? Or try to check in the morning the next day (skip time by the campfire if it isnt dark, then go to anshi and sleep, then go to rina, and 'ask about the research')
Have the same issue here, did as instructed and yet nothing happens, the 'ask about research' button doesn't show up in the morning.
I have exactly the same problem on 0.2.5 :(
