Jakours2 on "[Plugin: MainWP Dashboard] Invalid host."

Unable to add site.. always have this waing in connexion test : HTTP-code: 200 (OK) - Message d'erreur : Invalid host.

Any suggestion?

https://wordpress.org/plugins/mainwp/

im using wordfence on child site.

and i'm in local installation.

And, if i try to add a new web site : Invalid request