[Hexcode]

Hi guys, I have a big problem where I can't find a solution or an idea, I try to crack a program but the idea is the next, when I change even a letter in the strings with Resource Hacker for example and save the changes, when I start the program becomes instant DEMO VERSION and a WATERMARK appear when i save a photo,this watermark i don't find ,or how i can remove
I'm waiting for an opinion or an idea on how I could get over this check.