@Dritoncazimim, can you provide the exact version number in the format of nnnn.xxxx. The “Latest” doesn’t mean any thing. It could mean you’re using the latest public build (2018.3326) or the latest daily build (2019.3545).
@XeduR is right about the simulator and native objects. Some native objects don’t work in the simulator because it’s not a device. Build for a mobile device and test your app for that.
The Graphics v1 being deprecated is a little more complex. You could be using a line in your config.lua that lets Corona still support some graphics v1 features, which means you are probably still using some graphics v1 features in your app. It’s a warning that can be ignored, but you really should spend the time updating the app so that it doesn’t use those features.
The core changes: Some display.* objects x,y was the top left corner. Now all are by default centered.
:setReferencePoint() has been replaced by .anchorX and .anchorY
:setTextColor() has been replaced by :setFillColor()
Colors are no longer 0…255, but 0…1. Simply divide any color values by 255 to convert it. For instance, this orange: setFillColor(255,127,0) would become :setFillColor(255/255, 127/255, 0/255) or just do :setFillColor(1, 0.5, 0)
Rob