2 Possible Reasons:
1) You have changed the time zone
2) You have copied the HDD contents.
1). If you have changed the time zone, change it back, then contact obdii365.com customer service to get GDS2 activated again via Teamviewer. It is free.
For customers who want to backup the GM MDI software, but get the error code “No Valid Lease Found”.
You have to activate GDS2 software again.
Order the online activation service for gm mdi 2 software here.
Activation is done via Teamviewer. No real shipping.