QB module and QB UK - has anyone got this working

Before I waste time looking at it and then time trying to get it working when I might never get it working anyway.

Say for example it is only set up for US QB.

Does it work well with US QB?

Does it work with Canadian QB?

I have a Client that uses QB Merchant Services and wants their cart set up to use their service. Did you have any luck finding help with your question or get it set up?