Author need to rewrite a paragraph or get a remedial basic math course he started out at 40 then gained 10 for asking about sword manual then gained another 10 for his sword performance 40 10 10=60 not 50
Well, you shouldn't lock this chapters.
Try to post it on Scribblehub or RoyalRoad, it is way better options and you even get to retain your rights of your work so....but still it's your decision.