wp fastest cache does not change the urls like that. Can you clear cache please?
Hi Emre,
Thank you for your reply.
I have tried deleting the cache. And I have also disabling the plugin and reactivating it.
The next time the cache is created, that page is likely to be OK, but other pages will have the problem.
are the urls httpS or http?

If you look at most of the site, it is working fine. http://www.attenboroughsc.org.uk/
Your image states it must be https, but I don’t have an ssl certificate so I am using http.
Do you mean that wpfastestcache requires https?
wpfastestcache does not require httpS. I just asked.
Thank you.
What more information can I give you to help track down this problem?
Here are the options I’ve got set:

Would a copy of the .htaccess file help?
Another plugin must cause this issue I think. You can try another cache plugin and monitor the site.
I’ve swapped to using Comet Cache.
It seems to be working at the moment. Fingers crossed it will be OK.
But I would be interested to know what was causing the problems for Fastest Cache. So my intention is to look into it further when I get a bit of time. I will go through disabling other plugins to see if I can find what is causing the problem.