Cannot activate remote key learning using the Dlc?

My car's battery drained during -30-degree Celsius weather. The following day I couldn't open the door with my key fob or to that matter with my regular key as the key would only go in halfway like it was jammed with something. Eventually I got the door open with a wire hanger, and the car wouldn't turn over. I had a jump start and I got the car running, later on I got a new battery. My key for the door went all the way in the door but the key fob didn't work anymore, I tried reprogramming the fobs by using the DLC option, but it would not go into "remote key learning activated" mode. I tried resetting the car by holding the battery terminal arms together for 10 seconds, but again it would not activate but it made 1 beep but would not beep again unless I reset the car via holding terminal arms together again. I feel I might have the wrong battery in the car. But something to note that my negative terminal arm is a little worn ei, it's doesn't wrap around the terminal I have made a make-shift so it bends over it and is basically only working due to touching, also the DLC says I need to change remote battery but I have done so but still doesn't change anything.