Weird behavior of search system

My member directory page is set to a page called “Répertoire des membres” as you can see in the attachment.

When you click on the link : https://touchem.ca/membres/
It redirects to the home page.

If you search in global search of my website those words, it also redirects to the home page.
– mem
– membre
– rep
– répertoire
Anything in the title “Repertoire des membres” will redirect to the home page.

If I set the member directory page to another page, the above words would stop redirect to home page, but anything in the new page title will do the same problem as before…

The page I need help with: [log in to see the link]