It’s interesting how most products have moved to a subscription model. I remember when PC software started doing it in the early 2000’s. Now most WP plug-ins have subscriptions.

But I agree with the others about it’s necessary to provide proper support. Unless you’ve got a product with a huge install base, it’s very difficult to cover your support costs without a subscription model.

In any case, the plug-in itself looks pretty cool. I’ll have to check it out.