Stripe recurring payment issue

I bought support for the Houzez theme and have a ticket raised which has been unresolved for nearly 6 months. Despite numerous additional to their support they refuse to do anything about it.

Houzez recurring stripe payment does not work because houzez is using outdated Stripe API. I cant use this theme until the payment issue is fixed. They (favetheme) have acknowledge the issue and have promised to make it a priority, but this was over 5 months ago. Any future tickets i raise goes into black hole, leaving me very frustrated.

I’m paying support which I’m not receiving.