I cannot see Vuforia package in package manager. unity is 2020.1.3, vuforia is 9.3.3 I installed the sdk that you give but does not work again.
I cannot see Vuforia package in package manager. unity is 2020.1.3, vuforia is 9.3.3 I installed the sdk that you give but does not work again.
Download Vuforia sdk from Vuforia-s site. It will add dependencies in your package manager. Then you can donwload the version you want.