In night 2 the door on the right sometimes stops working when Chica's outside, no plushies or anything, it just shuts off. Any way to remedy it?

No, you just missed the plush baby. They leave if you ignore them too long.

yeah at some point they just block the door for an unspecified amount of time. its why i always recommend that you just dont stay in the cams for a very long time becease then they just dont spawn.