The Ipad doesn't even respond to the computer assistant.

There is no response, please make sure that the version of AISI assistant is up to date.

First of all, check whether your data cable is original or supports officially authorized MEI certification. Some cheap cables can only be charged and cannot be used as data lines.

Let's see if the AISI Assistant APP on the iPad is installed. AISI assistant must also be installed on the computer.

Next, unplug the interface and plug it back in for verification.