Problems with the Redirect app on Wordpress

My YunoHost server

Hardware: VPS bought online
YunoHost version: (stable)
I have access to my server : Through SSH
Are you in a special context or did you perform some particular tweaking on your YunoHost instance ? : no
If yes, please explain:

Description of my issue

I’m redirecting a to with the Redirect app (I’ve choosen 301, permanent redirect).

My problem is that works while redirects me but not on the specified page.

How can I fix that?

Thank you.