Mine worked this morning early (again, after yesterday morning worked for me too), and again just now also.
@hillgun it isn’t really a big problem if it is still happening for your car now. If the car isn’t asleep - that is if it is charging or it has sentry mode on - then everything is working as normal; you can turn on/off the HVAC, check charging progress, watch the sentry cameras live, etc. You will only have difficulty if the car is asleep and you want to wake it remotely - from further away than Bluetooth range from the car - or perhaps if you use 3rd party smart charging software (like ChargeHQ) and it wants to remotely wake the car in order to start a charging session.
It should be fixed anyway, either already or soon, for your car. It’s unfortunate but it seems, based on it not being a global issue, that one particular telco (Telstra) changed something which broke the sending of the special “wake up” SMS message - and it sounds like also broke something for remote connectivity for Kia EVs at the same time - and it’s taken a couple of days to be put right by either Telstra or Tesla.