Nobody is claiming that in one month you will become a chess Grand Master. The key word here is IMPROVE. Certainly you will notice an improvement in your game in a month. You can actually improve your knowledge in five minutes.
Uses of Diamond members

Uses of Diamond membership . CAN A PLAYER 100% DEDICATED IMPROVE IN JUST 1 MONTH , THEN I WOULD LIKE TO KNOW + ONE FREE TRAIL
You will see some improvement if you use what you learned in that 1 month. Or you can look at it this way. Enroll in college for 1 month and then drop out. How much are you going to learn?
Uses of Diamond membership . CAN A PLAYER 100% DEDICATED IMPROVE IN JUST 1 MONTH , THEN I WOULD LIKE TO KNOW + ONE FREE TRAIL