WP Plugin Licence Authentication Service?
What I was trying to find is a service/system recommendations that allows one to create a premium plugins and control the license (i.e. is it a paying customer, how many sites is it listed on, ect...)
Any Wordpress Ninjas out there that can offer some experience from real world use, and not just a Google search?
Like what do you use to process payments, create membership level, issue api for plugin, handle deactivation if one cancels ect...
Tim Pears