Strange behavior for inbound mail configuration

Hi,

I have a problem when I want to add an inbound mail.

I want to add an inbound mail to create ticket when a message is received and respond.
I saw that suiteCRM has some config to do that simply, but I got a problem when I want to do that. First when I’m on the edit view, those config are hidden. There are of the view, but hidden. I was forced to activate them by modifying the code, and I think it’s strange.

And then, when I made them visible, and saved, I got a message saying something like “your configuration are not optimal, edit it”.
So maybe I’m not doing it where I’m supposed to do it,

If i explained it bad, or if you need more info or screen shot, just ask me.

Thank you for reading.