Cannot add the Seeeduino boards to the Arduino IDE

I just purchased the Grove Beginner Kit for Arduino. I followed the set instructions for adding Seeeduino boards to the Arduino and it would not add the boards. I have tried following the setup multiple times and still was unable to add the boards. This forum is very confusing as is the basic setup instructions. Any help would be appreciated.

You can refer to our introduction document to install the board. If it is unsuccessful, we hope you can provide more screenshots to help us judge.