Yes, you can.
As per our license term, a customer can use the plugin on the live site(s) according to his package. A personal package holder can activate the plugin only on one live site. So, he can’t reuse the plugin on another site. If a user desperately needs the plugin for his new site, he must upgrade License or buy a new package.
*** Before using the plugin on the live site(s), a customer can use the plugin on some under construction fields like →
Sub-Domain/Multisite: If you are using a sub-domain in the same WordPress Installation like a WordPress Multisite, then you can use the plugin both in the main site and that sub-domain site. If you are using a different installation of WordPress for a sub-domain, then you can’t use a single site license for that sub-domain. In this case, you have to buy a new single site license for that sub-domain.