Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
I enabled this skill and started it, then stupidly disabled it thinking it would turn it off, instead it has left it permanently running and when i enable it again it doesnt recognise the previously running sounds!! it wont turn off!!!