A registration code is a series of letters and numbers used to license the software. The only legitimate and safe way to obtain a code for the Professional Plus version is through official channels:
For basic cropping, rotation, and minor color adjustments, the free version of PhotoPad (available for non-commercial use) may fully satisfy your needs without requiring a registration code at all. Free and Safe Open-Source Alternatives photopad image editor professional plus registration code
Free versions may crash frequently or corrupt your images. A registration code is a series of letters