Hi Tom! Thanks for getting in touch–we’re stoked that you’re checking out the plugins and I hope they’re a fit for you. 🙂
Good question. We like the “one site = one license” rule, even when it comes to multisite installations. However, there’s nothing preventing you from using a single license and then applying the plugin to all sites on your network. It’s sorta like the honer system in that regards.
The difference between using a Personal License and, let’s say, a Business License is that the Personal License will only allow you to register one site for automatic updates. You’ll still be able to access support and be able to download plugin updates from here on the site. In no way will the functionality of the plugins be affected by the license you choose.
Does this help answer your question and clarify the licenses a bit? Please let me know. 🙂
Cheers!
Geoff