Ok got it. Of course the code given does the job I asked. Few user to allow, can be done simply by changing the snippet quickly.
I was just wondering if this was possible, my knowledge was not good enough to modify this. But, again, you gave the answer : thank you ! I’m learning , of course I tried before I asked. I will have a look and try again with what you just wrote.
Thank you @danbp, this work ! I’m pretty sure this will help a lot (and not only me).
I’am asking something more : can this be adapt to allow only some user role to use private message ? (and not only some users ?) As the second part of the code you wrote, it remove the button to susbscriber.
(I’m learning PHP, I’ve tried to change the code but did not succeed to have it work…)
I already tried, this does not solve the problem (deactivate everything, the website went down… the all Kleo theme is linked to those components).
I finally find what the problem was : my page was hosted at https://www.mywebsite.com and the link was trying to validate the subscription form to https://mywebsite.com. When the page was reloading, it kept the content (except the password, security purpose I think) but it was exactly the same page (nothing was sent to the new subscriber, nothing was sent to the database neither the admin).