Hi Jussibr,
Thanks for reaching out!
If you have 1 license you can use that for your live and your staging site, though not at the same time.
You have 2 options:
- You need to go to your account on theeventscalendar.com and unlink your live site first. Then you can paste in the license key on your staging site. Then repeat when updating the live site.
- Simply download the newest version from your account and do a manual plugin update on your staging site.
Here is an article with a bit more details on this.
If you would like even more info, then I suggest this one on What does buying a license get me?
Let me know if this answers your question.
Cheers,
Andras