Hi,
The issue was the custom code that filtered the events that I previously suggested, as it affected all search instances. I have made a modificaiton to it, now it will only affect search ID=1.
Also, I noticed that the search instance=4 ‘news imported’ is imported from a newer plugin version (4.13.1) while the site is running an older (4.13). That is not going to work that way, the imports are backwards compatible, but importing from a newer release may cause issues. Instead, I suggest creating a new search instance, and deleting this one. The ‘test news’ instance should work, as it looks like it is created within this release.
For reference, here is the modified code version: