I created a mobile service app using azure connected it to SQL DB that has this table 
now trying to insert and retrieve data in my Windows Universal App gives me this error: 
I tried many things one of them was this code:
HighScore item = new HighScore { SCORE = "100", playerName = "Mark" }; await App.MobileService.GetTable<HighScore>().InsertAsync(item); tried also to get the table bu name but no luck, now what is weird for me is that this same code works perfectly on the TodoItem Table but not on other tables.
Thanks in advance