UPDATE - GC has started sending information to my ZC.
I still get the same errors from the Responder test - no clue why! But who care, it is working!!!

Thanks for anyone who tried to help, and sorry to anyone who still has the same problem as I have no clue what I did.

I have a theory that my host fixed something without telling me as I have been questioning them about it also ... but again, who cares.