Hello mate,
As I am a Detailer myself I would say that the wax has been left on too long in the warm... TBH wax should only be applied in a cool environment pref indoors.
Also I am probably guessing that you have probably applied too much Wax and it has just been to much to buff off...
I would say wash the car heavily, plenty of shampoo in the buckets, and wash a few times with a lambs wool mitt. Dry the car off, and then have a go at re-waxing... You seriously do not have to use much wax at all. The thinner the layer the better.
Do the swipe test after around 15 mins or so (do try and do in the shade).......
This should be enough to re-lever the wax again...
After all the Wax is completely off (also use plenty of microfibres to wipe off the wax, they clog quick)... Leave the Car in the Sun to really bake on the wax that is left behind. (But do make sure you have buffed it all off before leaving in the sun!!!)
Job done