If screen isn't cracked , Before you tamper with anything that might void any future warranty repair, You could try using a USB mouse until you can reach support for your geographic area by phone. Call in with the unit's serial number and register password and find out if screen is not cracked and you purchase of a Total care update, that the screen replacement repair be covered under the Total Care Update warranty and be something they can get repaired in your country without shipping it to China.
If they tell you the serial number of your unit( you bought from a seller off Amazon or Ebay) is not in their database as one from a authorized regional dealer, then you would have to deal with Autel Support of Mainland China and pay to ship it overseas for needed repairs , and I would pass on buying an update if I had to deal with support in China and shipping one over there for repairs.