WHMCS and Quantum Vault

Put a support ticket in for this about 12 hours ago, but haven't heard anything at all back...

I'm running 5.3.4 and trying to install the Quantum Gateway (using Quantum Vault because I do not want any CC info going through my site), but every time I try to process a test order I'm not getting sent to the Quantum page - I'm being prompted to enter my CC info on my site (which is exactly what I DON'T want to do!)

I've seen one or two older threads here about this issue, but no resolutions - so I'm thinking it's probably just a setting or something I'm missing.

By the way, this happens on ALL shopping cart templates (my first thought was that I had screwed up the custom template I'm working on)...

Anyway, would appreciate a nudge in the right direction on this...

Thanks!