Does anyone have experience with VisionData for online subscriptions?

We currently use VisionData for our home delivery circulation management. The intent was to switch online subscriptions over to VisionData too. I'm hesitant to make this switch because it will undoubtedly cause a massive drop-off when everyone who was once on auto-renew has to set up a new subscription in a different system. Their support has also never been stellar. Does anyone here have experience using VisionData for managing online subscriptions?