You have to sync data yourself. It doesn't do it automatically. You cannot load save or load data on Awake() in your Plugin.cs File.
// This will prevent other mods data to be mixed in with your data.
public static LethalData storage = new LethalData(modName);
private int exampleVariable
public void SaveData() {
// Save(string key, T value)
// The key has to be unique and it dosen't have to be the variable name.
storage.Save("exampleVariable", exampleVariable);
}
public void LoadData() {
// Load<Type>(string key)
exampleVariable = storage.Load<int>("exampleVariable");
}