Enable URE Business on second installation

I’ve just re-upped my annual subscription to the plugin, which I use on two different multisite installations, and I upgraded to the Business version so I use the advanced options on more than once site. One installation has the field to enter the new key, but the other one does not. I don’t understand. Do I have to uninstall then re-install the plugin on the second installation in order to enter they new key?

Thanks