Hey Rich, I think I might be one of those savvy guys you're referring to.
Premoves are for live games, anyone can use it. Conditional moves are for daily games, and you need a premium membership in order to use it. I do see you have a gold membership, so that is strange that it isn't working for you. Must be a bug, or some update that I don't know about. (It might only be for Diamond members, now that I think about it.)
I've tried to make provisional moves to work during my games,
but even went to to settings several time to reset them it never works.
I'm using a new PC, it started happening a month before I had to renew my membership.
Ive turned it off, turned it on, turn om PC on and off.
I has windows 10. I TRIED. FOX, OR GOGGLE CHROME,
i TRIED GETTING HELP SUPPORT BUT I GET A RUN AROUND.
MAYBE YOU SAVVY GUYS KNOW THE ANSWER. THANKS