It's possible to get 40 requests in 12 hours if timed right, you have 40 active neighbors that are up in different time zones. You get 20 back before the day resets for me it's 3 am eastern. Then you get 20 between 3am and whenever you get up. If you don't have 40 active neighbors it won't work. You can only send one request to one neighbor per day I have neighbors with this issue. Then the crafting on top of it, if you can't babysit your device it's impossible.