It is prohibited to use any external assistance or cheats that will give you an advantage in the game. If you do so, you will be permanently banned from Ranked, unless you pass the skill test after your appeal. Special rule for Googling: Googling once will result in a one week ban. Googling twice will result in a permanent ban. Playing with an alternate account is prohibited and will result in a permanent ban. There shouldn't be any black screens in the challenges. If you still get one, make sure to refresh and send Eiffel Tower if nothing happens. You won't need to take any special actions on Gen 1, aris and photospheres, just guess based on what you see.