Before you install, Greasy Fork镜像 would like you to know that this script contains antifeatures, which are things there for the script author's benefit, rather than yours.
This script is only fully functional after you make a payment. Greasy Fork镜像 is not involved in the payment, so can't validate you will get anything of value or help you get a refund.
The author of this script explains:
脚本存在第三方答题接口付费功能