mod is the long process which requires you keep patient. i am in process of moding and i haven't found any problem. maybe i choose good source of apk file. i recommend you should download from reliable source. this site can be a better choice for you: http://choilieng.com. i have installed: http://choilieng.com/apk-on-pc/com.robtopx.geometrydashworld.apk Geometry. you can consult this app for demo.