i dont know if it's just on Android but "We" have this problem that we can't start the route...on Leslie the heating element.. I know we received the Book of Electrical Something... But that wasnt the case because can't open that book...like how every book about new technology or equipment exist but you can't read it and it was automatic knowledge ....but the thing is here..we don't receive the knowledge we just received the book botany for example we or maybe i' received the med kit but not the potion that destroy the roots of old town...which is why we can't really progress....my phone is not laggy it was be and original so it can't be my in my defect ...maybe this is a bug in the game plss fix........or you can add codes that allows as to receive the corresponding Bugged items..or just pls fix