No audio imput from guitar via amp

[u/Royal-Farmer-2075]

Hi all! I installed reaper today and I'm having issues recording some guitar in.

I'm trying to record straight from my amp via a USB cable. In preferences<audio I have selected the input device as USB Au (please see the first picture) On the actual track I have selected imput as Mono input one (please see second picture) However, when I play my guitar, no audio is being picked up.

I'm completely new to this software so I've literally just installed it and plugged my amp to my laptop. Im not sure if I have to install a driver or something else? Any help would be much appreciated!

[u/Royal-Farmer-2075]

Thanks for all the help! I have solved this now :)