As in the update information (and this forum)

charge through OBD2 port is disabled since the last update.

So charge in the included device and plug only.

 I  think it was just a Downgrade D@ck Azz move on Autel's part removing this valuable feature on their Price Point scanners . They say it is so the batteries can last longer, then why  don't LG , Samsung , Motorola, warn you not to compromise the battery life of your phones  charging them from a USB cable adapter off a 12 V Cigar lighter socket? I wonder when the battery lives dwindle to 30 minutes or less 2 years from now , if you be able to keep a MS906 or DS808 battery up  from the USB cable plugged to 12V lighter socket USB charge adapter?
  I'm thinking Autel might  just be trying to  avoiding a rash of scanner warranty claims ,opting to use cheaper slightly below industry standard Lithium batteries where more  make past their 1 yr warranty periods .  Repair or replacement of the batteries then would be at our expense out of warranty ( if the DLC charging feature gets removed now to.
   I think If Autel really had our best interest at heart, their support would be second to none, support would still be on the User Forum to answer questions,  and they would provide a backup partition for restoring your  Scan tool software in minutes if something goes wrong.