Trying to put a iCloud account on my IPod touch 4th gen

Hello recently I have been trying to get my iCloud account on my 4th gen IPod touch. But sadly there are some problems, firstly when I try to log on with the account that’s on my Ipad it send a code to it and asks is this you but the problem is the iPod says something like this: “Enter the code on your other device” but it sends a code to the iPad thing is, it says the same damn thing on the iPad so when you press the okay button on the iPod it never gives you a prompt to put the code in. What do I do?