If I were you (living in USA) I would first call Autel USA and give them my unit's serial number and register password and find out if when I decide to purchase a Total Care Update for the unit, would my unit qualify for full USA support and another year of warranty coverage?
If the answer is yes I would try to find and purchase a Total Care update from an authorized USA autel dealer for less than Autel's full suggested retail price if possible.
If the answer is no , the update can not be found cheaper than full retail , and I would have to get support out of mainland china and ship unit to mainland China for repairs if something goes wrong , then I would just sell my tablet as is and buy newer unit from authorized USA seller.