Hello,
try to connect the Maxisys with wireless to the internet.
Then open the VCI "App".Then click on update, then connect the VCI with the USB cable.
It should be come a information about a update and then only follow the steps.
It should update the VCI and finerly it should work again by connecting to the OBD connector.
Hope this helps and give a feedback, thanks.
Greetings Mathias