Welcome to Project-GC Q&A. Ask questions and get answers from other Project-GC users.
If you get a good answer, click the checkbox on the left to select it as the best answer.
Upvote answers or questions that have helped you.
If you don't get clear answers, edit your question to make it clearer.
greasyfork.org certificate is valid until 04/21/2017, Do you have correct date set in your computer and do you have your browser up to date?
If not from greasefork, you can always install the script directly from github.
