This add-on alters the users membership expiry date and make sure the membership expires till the last date of the current month.
This add-on doesn't have any setting page or in other word it doesn't require any configuration since it is a small custom requirement for a client.
Once you activate the add-on, It will check if Restrict Content Pro plugin is activated other the add-on will be deactivated automatically and will display a message at admin notification area.
After activation, the add-on will set expiration to the last day of the current month on purchasing/upgrading membership