I have also tried for two lots of credits from "valued Opinions", with no luck.
From what you have written no point emailing no"valued opinions" themselves, but go for WGT.
Whilst on about credits, I signed up for "Credit Expert", cause I wanted a better driver, to date NO credits.
GOOD LUCK with your choking attempt. I am now off to post another point about WGT themselves re game play.
mick