Cancelling subscription fails (Stripe Gateway)

My client’s customers are still being charged after attempting to cancel their subscriptions. This is a new version of an older site, and I transferred hundreds of users over to the new site during development. When I transferred subscribers over, the payment gateway was set to “Stripe (test)”, so once the site was live I synced all of them to the live gateway to prevent issues during automatic renewals.

I have checked Stripe and the webhooks are operating normally, but there appears to be two gateways working on the site currently: “Stripe” and “Stripe (test)” which is from when I was developing the site. “Stripe (test)”, even though it’s no longer active, is still be used to accept renewal payments. How can I permanently remove the test gateway? Is that what is preventing users from being able to cancel their subscriptions?

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