What is this a punting website or English grammar school ? No wonder people are reluctant to post reviews or ask questions on here if certain small minded members have nothing better to do than pick fault. Get a life you sad people.
I am far from sad: very happy, thank you. Sex twice a week ia almost a miracle at my age.
You say people are reluctant to post reviews. Based on what? There is no shortage - that's what makes UKP so worthwhile.
As to grammar, Confucius, wiser than you and me, said if he ran China the first thing he would do is make sure grammar was used correctly, because if not "what is said is not what is meant, what should be done is not done and there is endless confusion."