I doubt if this will help, but I had to have several goes through the instructions before getting my 2 keys working and sync'd.
What I did notice is that there are discrepancies between the various sets of instructions. For example the instructions from RSW Solutions say to close and lock the doors as a first step, whereas others say not to lock the doors.
I don't know whether it actually makes a difference, but I could only get it to work with the doors unlocked.
I persevered over 2 days and it finally worked.
My other observation is that most locksmiths have a device that checks whether keys are actually transmitting, but with my previous Jeep, only one of the locksmiths I went to accurately detected a sensible transmission as opposed to something they were not sure about.