How to upscale images using 'Upscayl' 

It probably will work on most systems github.com/upscayl/upscayl/wiki/Compatibility-List

Restarting your device may help, it fixed my problem.

First of all it's not a scam!! May be these links will help: github.com/upscayl/upscayl/issues/362 github.com/upscayl/upscayl/issues/649

Toi dùng thử roi , nét tốt nhưng làm lệch màu gốc của ảnh

Yes I am facing same issue