Cache Won’t Clear

Hi,
Recently, we had an issue with a Woocommerce upgrade. After we applied the fixes and then cleared the WP Fastest Cache we noted that there was no difference and the fixes results could not be seen.

We temporary disabled WPFC and the fixes started working again. We enabled WPFC and cleared the cache again (several times) and they stopped working again. We no it is not a conflict issue these fixes are on other sites that work using WPFC – we figure you may know the answer?

Thanks
Vincent