[nu11eaf]

1/: Are you sure the dipstick was fully seated and car level and engine stopped for about 5 minutes to allow correct level indication, if so your oil level is a bit low.

2/: I am not familiar with your car but are you running the engine to take the electronic level reading, the new Spa cars require the engine running, your is the older non spa model so I do not know if it works the same, if it is the same and you can read it with engine stopped it will indicate a false higher level to the dipstick. (Spa models no longer have a dipstick)
If electronic level is showing half way with engine running it should be ok.

3/: https://www.volvoforums.org.uk/forumdisplay.php?f=112, the correct forum for your model. For any other help you might need were there will be more folk knowledgeable on your vehicle.