With the introduction of DxO PhotoLab 4 (4.3.3) and DxO PhotoLab 5 (5.0.0) all DxO ONE presets have been deprecated.
If you still want to use them, you can download them here: DxO ONE Scene Modes.zip (8.0 KB)
This archive contains the following presets:
1 - DxO ONE - Auto.preset
2 - DxO ONE - Portrait.preset
3 - DxO ONE - Landscape.preset
4 - DxO ONE - Night.preset
5 - DxO ONE - Sport.preset
Once downloaded, you have to manually import them in DxO PhotoLab.