With the new update(v2.1) of WPAdCenter and its Recurring Payment Addon the issues with multisite compatibility have been resolved. Also, the payment log issue with Recurring Payment addon has been fixed in the new version(v1.1).
To download the latest version, please use the same download link that you had received with your purchase.
If you face any problems, please write to us at support[@]wpadcenter[.]com.