Cannot Install DFRobot library

Can anyone help me to install DF Robot Libary. i still cannot install yet. i do all tutorial in youtube like include the DFRobot.zip libary and my code program always like this
C:\Users\Bangkit\OneDrive\ドキュメント\Arduino\Kodingan_kalibrasi_sensor_pH\Kodingan_kalibrasi_sensor_pH.ino:20:10: fatal error: DFRobot_PH.h: No such file or directory
compilation terminated.
exit status 1
Compilation error: DFRobot_PH.h: No such file or directory
I do to in Preferences > copying the dfrobot link and it still cannot running.
If anyone in this forum know, can explain me?