WP Super Cache not working

Hello,

WP Super Cache does not seem to be doing it's job. When I use the Cache Tester, I always get the "The pages do not match! Timestamps differ or were not found!" error.

I have tried following all the support steps I can find within the plugin interface. There must be something I am missing... I have enabled Support Access; could you please go in and check my settings?

Thank you!

Clyde