Cannot hear plug in

[Francis]

Hi there:

I am using a Mac computer. Jamkazam recognizes my audio interface and sets up the inputs and outputs correctly. When I select a plug in however, it plays the pre plug in clean signal, rather than the post plug in sound. I should be hearing a distorted guitar sound, but I am hearing a clean guitar sound. Can someone advise as to what the issue may be?

Thank-you for your time and expertise.


Francis