Hi Richard,
Thanks for your reply. Sorry the client asked me to turn off the site as it was unbearable. I have reenabled it. I had deactivated the plugin but have turned it back on now. The settings turned on are:
- Cache hits to website for quick access
- Use PHP
- Compress pages
- 304 not modified browser caching
- Cache rebuild - serve supercache file to anon
- cache timeout 1800
-Timer 3600 seconds
- CDN off
- preload cache files every 100 mins
- preload all posts
- preload mode
- debugging enabled
Cache tester - timestamps match.
thanks for your help!