Can't speak to touchpad controls, and the game registering clicks before the night screen is actually loaded is definitely a bug, but it's pretty damn reasonable to suspect Kan. Not to say that the writing couldn't do with some polish, but:
- X knows the MC is using the financial aid program.
- X probably knows the MC personally, to consider him a good enough candidate to receive the Fancy Camera.
- X tells the MC that he has lost access to the financial aid program.
- Kan, with knowledge of (3), shows up promptly after the MC gets the package.
- We have no actual confirmation outside X's letter that MC did in fact lose his financial support, except...
- Kan shows up to collect the rent. (Though not after rewinding the week, for some reason. Not complaining on that score, but it seems odd.)
If the loss of the financial support is real, Kan knowing about it (as dorm supervisor and rent collector) is not entirely implausible, but the timing of his visit and the Extremely Unofficial Message on what looks like official letterhead, which he would likely have access to in his position? Quite suspect. And if the MC didn't in fact lose his financial support, the whole thing is basically Kan making money off pushing the MC into making porn. With some bizarre future tech.
Also, Kan is weird and goes into people's dorms at night to watch them sleep. =P