Thank you for your advice, but unfortunately my theme doesn’t have any search.php and searchform.php page. When performing searches, results used to be returned through the index.php page.
Now that I have customized it with static content, all searches (through plugins or not) send me to the index page.
Thank you for your help.
Please, I didn’t solve my problem yet and I don’t think it’s a big deal. Thanks for having a look !
