so if existing subscription does not contain callback url for whmcs, even enter subscription ID on it, it will not track payment, correct?
so the way to track existing subscription without whmcs callback url, I need to set IPN at paypal for WHMCS url? correct?
What you are saying about entering subscription ID of 2CO manually is not going to work? If so, what is that filed for when selected 2CO recurring payment option on client section page?
"As of V3, there is a recreate subscription link in the client area for each product and domain a client has."
so if subscription is cancelled, next invoice will have new link for new subscription? and user need to recreate it through that link, correct?
Thank you.