Odd issue with volume..

So I've recently had loads of issues with Wave Link which Elgato support kindly managed to help me with. But ever since I've managed to fix those issues, another one has cropped up.

My volume-scroller on my keyboard no longer controls the actual volume even though the windows volume-popup shows it changing the volume and the taskbar-icon showing that the volume has changed.

Same goes for my remote that I have installed on the pc, volume-popup shows the volume changing but the actual volume doesn't change.

The volume sliders in Wave Link does not change when using either even though Wave Link System channel is set as the default output in Windows.

Any ideas?