Hi
We had problems with our ePay payment gateway, and while trying to debug the problem, so you better could assist fixing the bug, I also tested the QuickPay payment gateway as well.
I found that it has it's own issues with recurring payments.
I can complete a recurring payment, and see the transaction linked to the invoice, with all the data from the QuickPay response. But the amount registered within PayPlans is 0, and therefore the invoice is not registered as paid, so the subscription is not activated. A normal fixed type subscription works, so the issue seems related to the recurring type.
With a fixed subscription I got a Gateway Txn Id, but with recurring subscription, this id was also 0. Instead I got a Gateway Subscription Id.
Also, I couldn't download the latest version of the QuickPay plugin - I got an error response. My test was on v. 3.4.1