Thanks Bun, that's the Android Settings rather than Bluestacks settings. Found it now, reset the advertising ID... made no difference :(
ASD1978:
I've been in touch with WGT about this and they've said they're looking into it. Fingers crossed.
It seems it's only a UK problem, US players are all ok! Nothing less than I've come to expect from WGT over the years, always looking after their own and sod the rest! Even their videos are often less than 10 seconds long, whereas ours are 30 seconds, and lately they're even more because of the way the videos are done now!