Plugin includes a custom HUD Class.
Reparent your HUD to this class and Loading Screen + Progress Bar will be auto generated.
You can customize visuals and widgets in default settings of a Savior 2 Slot object.
The shape of progress bar itself can’t be customized however, unless you know C++ Slate programming, because it is a Unreal Engine’s built-in object.
You customize its color, transparency, font type, etc.
In demo project you can see how splash screen is used and how media asset for a video-based loading screen is imported.
Video only work on packaged game and the media asset must point to a mpeg file within the game project folder.
Edit:
If you need completely custom progress bar style, from the instanced Slot you can call “Get Save Progress” and “Get Load Progress” functions and feed your widget with the return value / 100.