I restored all W3TC and .htaccess files from the backup (W3TC 2.6.1) and it works !
Now I’ll test to delete W3TC 2.6.1 and reinstall W3TC 2.7 on a local version of the site, without update to see if the same problem occurs…
Hello Marko,
Thanks for your prompt answer.
In my knowledge, there is no other caching solution.
url is https://www.saltimbanqueeditions.com