Your license key has reached its activation limit.

Hi,

I’ve recently moved my wordpress site from my temporary flywheel site, to my permanent domain and I’m now getting this message:

WooCommerce Zoom Integration Addon Error: Invalid License Key. Add your keys from here.

Following that link and adding my license key now gives this message:
“Your license key has reached its activation limit.”

How do I update the site linked to my license?! I only have one site, the origianl was just a temporary one while I built the site.