its not recording with my interface

i have a DigiTech RP 255 guitar pedal that plugs into my computer and I got audacity because it was free and seemed reliable. but every time I try to record with my pedal audacity wont record it. when ever I hit the record button the measure just stays there and doesn’t move. I would LOVE any help I could get because I really want to start recording! thanks!

Turn off Transport > Sound Activated Recording.

Plug into a spare USB port on the computer, not into a USB hub that connects other USB devices.

Reboot the computer.

If necessary, Edit > Preferences: Recording and increase “Audio to Buffer” above 100.

Most of the above is covered in the Recording - Troubleshooting FAQ .