I have succeeded to get the Samsung Galaxy Tab S2 to work with Litchi, but it took "some" effort.
You have to make sure that the USB rights are exclusive for Litchi.Clear this for Go and then put in the USB cable with the remote on.
It will ask you who has the USB rights, but only once
First I got the message that
With my phone I can easly switch between Go and Litchi. So I now use Litchi on the tablet and Go on the phone.
First I still got an error that there was no connection with the DJI servers. I had to try another WIFI connection than home. I used my car. I read that someone went to Mc Donalds.
If it works, it works great! Sometime I get no camera signal. Rebooting the tablet helps.
On one occasion the camera image was distorted (3/4 size). After Reboot it was OK.
The image is very clear. There is no lag.
Compared to my phone (S6 edge) it is a night and day difference.
Also Litchi is a great improvement over Go. Besides some settings is there a reason to use Go?
I really like Litchi, but I hope they can improve the support for the S2. Who should can I contact?