Disabling effectively Auto Draft and Post Revision

I don’t know where you placed these snippets in wp-config.php

Try adding this to your active theme’s wp-config.php file above the
/* That’s all, stop editing! Happy blogging. */ line

Thank for your suggestion.
Of course, I added the code in the file wp-config.php, and in the right position (above /*That’s all ecc. */)

Then should work.

They work just fine in my wp-config.php

To rule out any theme/plugin specific conflict, try:
– Flushing any caching plugins you might be running, as well as server and/or browser caches. Also, any op cache or content network cache, as well as Cloudflare, clear those caches.
– deactivating ALL (yes all) plugins temporarily to see if this resolves the problem (plugin functions can interfere). If this works, re-activate them individually (one-by-one) to find the problematic plugin(s).
– resetting the plugins folder by FTP. Sometimes, an apparently inactive plugin can still cause problems. Also remember to deactivate any plugins in the mu-plugins folder (if you have created such folder).
– switching to the unedited default Theme (Twenty Sixteen, etc.) for a moment using the WP dashboard to rule out any theme-specific issue (theme functions can interfere like plugins).

I tried in an other site and it worked, setting the codes in wp-config.php such as I mentioned above (define… revisions and autosave interval ecc).
Thank for you help, Tara.
Ines

Glad to know it ??