I have set Usage Limit Per User for addons, but even if the subscription is not completed, or the subscription has ended, the user can not select the addon again. The limit of addons should take place for active subscriptions.
So for example, if the user limit is 2, the user can use the addon only on 2 concurrent active subscriptions. When one subscription is ended, user should be able to select the addon once again.
In addition, how can I add the names of purchased addons on admin and customer notification emails?
Also, how can I delete the Usage stat of an addon?