I have an all in one RX500 and have the same problem.
If you click on printer preferences and select get ink levels it will show you the current level of your ink.
Prefered the pop up box with status monitor though.
Hands-on: Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
Samsung's beautifully designed Galaxy S8 makes for better VR experiences too
47 iPhone camera tips to help you take better photos
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.