One-off payment?

There are different options:
https://www.embedplus.com/dashboard/pro-easy-video-analytics.aspx

Core Pro is one-time while the other two offer subscriptions to other services on top of the lifetime features of Core Pro. For presales questions, we advise you to check out the contact info here:

https://www.embedplus.com/aboutcontact.aspx

-EmbedPlus Team

Thanks for confirming. I have purchased the Core Pro license.