Your latest trip out from castle OMACskull does not amuse the masses, nor are they willing to be lulled into a false sense of security this time around, which you will have some problems dealing with.
Ignoring the broken, senseless, and stupid attempts to 'modernize' the 'old code,' you have a perfectly functional game at your disposal already.
What you lack is a person who's professional and experienced enough to maintain it, which is just lame, given that it was made by one person, who had no formal training, and was largely self-taught.
Since you've failed so extremely miserably at acquiring human resources possessing the ability to maintain this game, which is so extremely time-consuming, it sucks all of two hours away from someone's life once every three months, you should really consider option B: pay Mehul cash, so he keeps your failboat from sinking, until such time that the 'new code' is more working product than epic fail.
I'm dead serious.