When i go to change my players ratings say from 73.56% to 77.82% it doesn't save. Other things work just fine when i save. 

So is it impossible to change the ratings or am i doing something wrong?

Thanks

I will look at it later today but if I remember its a reflection of his other ratings eg ca/pa and the ratings he has in relation to his position

 

look at a high rated player in that position compare the various fields

 

also I think the ratings go up as the game progresses its not instant