I followed the directions in the article and in your message.
I have the same staging domain now that I had when I purchased calendar pro. What I mean is the domain attached to my license on calendar pro matches the staging site. I deleted the license key and installed the latest versions of the calendar. I entered the license key and received the same message as last time:
“You are using The Events Calendar PRO but your license key is out of installs. Visit the Events Calendar website to manage your installs, upgrade your license, or purchase a new one.”
What do you suggest?