Please don't double post. An elf has to read your posting before it becomes visible.
I bought the mic from Gear4music
That makes much more sense.
The Solo has volume indicators, but they're not obvious. The knobs turns colors as you talk. Plug everything up but don't run Audacity.
The little Solo USB light or the USB symbol should be on. The Solo should be set for 48V off, AIR off (if you have that setting) turn the second gain knob all the way off, DIRECT MONITOR On.
Turn GAIN 1 all the way up and speak loudly into the microphone.
Never blow into a mic, but you can speak as loudly as you want.
Did the knob turn green and then red?
Plug your headphones into the socket on the right and turn the big monitor knob up. Can you hear yourself?
Let us know.
Koz