Programming new ket fob
 

I have a 06 impala I bought off of someone who lost the key, so I bought a new cylinder and key which starts the car after I program it to the car , then I bought 2 key fobs with new keys uncut . I tried to program the fob and it will not let me go any further than press ✔ to relearn key when I press the ✔it stays on that screen and won't go to the next which is relearning active. Someone please help!!!!