Plugin Modification YITH WooCommerce Points and Rewards Premium

I want some 3-5 Small Modification in this plugin Go to this link [login to view URL] and see the admin demo now i want modification in this 1) When Admin Update User's Point i want one text so admin update points and Reason why update point for what update point and i want show me how to update this point using code like if i want to do put conditions like if some one like hour page than 20 points will be added and when user check he or she can see 20 points updated using FB i mean its already show in admin but its only show if update by admin or purchase product 3) if there will be one product its price is 20 and if user have 19 points than user not able to buy 4) and on my account page if user have 40 points so in my account page it will show match product and that 4 product must have price less than 40 Budget will be maximum 250AUD not more than that Include "I am Plugin Expert in your Bid" Thank you Happy Bidding