Rear door wont open from outside

Maybe the outside handle was tweaked from using it too heavily while trying to open that frozen door- did you use a gentle hand when trying to open it? or did you have a 500 pound gorilla grunting while trying to rip the handle from the door? Just a guess, but a mechanic may have to go into the door to see if the handle is broken or if a connecting rod is bent

I had this problem with my 2007 Nissan Quest- I used https://www.youtube.com/watch?v=9AzHPz7zLPQ - it was easy and took about 15 minutes

There's a micro switch attached to the handle on the inside it needs to be replaced.